🔧 通用工程工具

🖨️ 3D列印時間估算Time 33 輸入層厚、填充率、模型體積與列印速度，估算 FDM 列印總時長、耗材質量與長度。Time 33 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 兩數之和/乘積最大/最小（數學題）Max/Min Sum & Product of Two Numbers 兩數之和/乘積最大最小數學題工具。輸入兩數及約束，求在和或積條件下的最大/最小值，用於初中數學最值問題的即時演算與練習。Solve math problems for the maximum/minimum sum or product of two numbers. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Pa... 🎹 樂器調音訊率計算Frequency 3 樂器調音訊率計算器。基於十二平均律以 A4 為基準，計算鋼琴全部 88 鍵（A0–C8）的音名與對應頻率，用於樂器調音、聲學校準與樂理學習。Frequency 3 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🚗 二手車殘值估算Estimate 14 輸入新車價、車齡與年裡程，按年限法與里程法估算二手車殘值，並給出綜合估值。Estimate 14 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. ⚖️ 雲臺相機重心計算Gravity 輸入各部件重量與距雲臺軸的力臂（正值為鏡頭前方，負值為配重後方），計算合成重心與力矩平衡。Gravity - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 人體（存在/微動）檢測Detector 16 人體存在感測器選型工具。輸入檢測距離、安裝高度、環境溫度與檢測方式，推薦合適的人體存在/微動感測器型別（如雷達、紅外），用於智慧安防與照明選型。Detector 16 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 低噪音壽命評估Lifespan 18 輸入初始噪音等級、噪音限值、軸承轉速與載荷，基於噪音增長速率模型估算低噪音軸承在超標前的保持壽命，輔助低噪音軸承選型與維護。Lifespan 18 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 低油霧壽命計算Lifespan 23 根據油品型別、工作溫度和轉速，結合 Arrhenius 溫度衰減模型與轉速蒸發因子，估算低油霧設計下潤滑油的使用壽命，幫助工程師制定合理的換油週期與油霧控制方案。Lifespan 23 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 低磨損壽命Lifespan Wear 2 根據磨損率、允許磨損量和日執行時間，結合磨損型別加速因子，計算耐磨零件的磨損壽命、已磨損量和建議檢測週期，為裝置狀態維護與備件庫存計劃提供參考。Lifespan Wear 2 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 修磨（磨刀/檢測/壽命）服務Detector Lifespan 刀具修磨（磨刀）服務工具。輸入刀具型別、材質、磨損量與已使用次數，評估修磨方案與壽命預估，用於刀具維護排程與成本管理。Detector Lifespan - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 健康（防護/檢測/替代）管理Health ( Protection / Detect / Alternative ) Management 職業健康（防護/檢測/替代）管理工具。輸入職業危害因素，評估健康風險等級（分數）並給出防護、檢測與替代建議，用於職場職業健康風險管理。Health ( Protection / Detect / Alternative ) Management - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. P... 🔬 光刻解析度估算Estimate 36 輸入光源波長與數值孔徑 NA，按瑞利判據估算光刻解析度與焦深（DOF），輔助半導體工藝節點評估。Estimate 36 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 💧 冷卻液濃度維護Concentration 20 根據系統容量與當前/目標濃度，計算需補充的原液量或水量（支援直接補加與排液置換兩種方案）Concentration 20 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 減速機選型Torque 1 根據電機功率、輸入轉速、減速比和安全係數，計算輸入扭矩、輸出扭矩和選型扭矩，支援斜齒輪、行星齒輪、蝸輪蝸桿和傘齒輪四種類型，並推薦合適機座號。Torque 1 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 製冷裝置選型Refrigeration Equipment Sizing 輸入製冷量、蒸發溫度與冷凝溫度，計算卡諾理想 COP、實際 COP 與輸入功率，並依據製冷量範圍推薦壓縮機型別與製冷劑。Size refrigeration equipment and estimate ideal Carnot COP from cooling load and temperatures. Free online tool on ToolBox — 100% client-side, no data uplo... ❄️ 製冷量選型計算Pressure 18 根據房間面積、層高、朝向與人員數量，逐項估算室內冷負荷並推薦合適的空調機型和製冷量，適用於家庭、商鋪及辦公場所的空調容量選型與配置規劃。Pressure 18 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 制動力矩計算Torque Response 根據轉速、轉動慣量和制動時間，計算所需制動力矩、峰值功率和制動能量，支援純慣性制動、阻力輔助和提升反向負載三種工況，為制動器、離合器的選型提供資料依據。Torque Response - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🛑 剎車片更換週期Brake Pad Replacement Interval Calculator 根據剎車片當前摩擦片厚度和磨損速率，結合車輛使用強度，計算剩餘可行駛里程並給出更換建議，幫助車主提前規劃保養、避免因磨損過度引發制動失效。Estimate brake pad replacement interval from current, new and wear-rate thickness. Free online tool on ToolBox — 100% client-side, no data uploaded, no ins... 🧪 化學配比安全計算Chemistry Ratio Security Calculate 輸入物料總量與 A/B 組分配比，計算各組分量、安全餘量及反應放熱估算，提示混合比例風險，輔助實驗室與化工生產中的安全配料與反應放熱控制。Chemistry Ratio Security Calculate - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General En... 🔧 單位字首換算（nano/micro/milli/kilo等）Unit Prefix Convert 輸入帶 SI 詞頭的數值（如 nano、micro、milli、kilo），在詞頭與 10 的冪之間換算，用於科學計數、單位字首轉換與物理量數量級整理。Unit Prefix Convert - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Ge... 🛢️ 壓力容器壁厚計算Temp Pressure 3 按 GB 150 標準，輸入設計壓力、內徑、許用應力與焊縫係數，計算內壓圓筒所需壁厚，並計入腐蝕裕量與材料負偏差，確保安全。Temp Pressure 3 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🗜️ 壓縮機選型計算Pressure Flow 4 基於絕熱壓縮過程模型，輸入排氣量和排氣壓力，計算理論功率、軸功率並推薦壓縮機機型與電機配置，適用於空氣壓縮、工藝氣體增壓等系統的裝置選型。Pressure Flow 4 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔌 廚電功率匹配Power 7 根據廚房電器總功率與同時使用係數，計算需用功率、計算電流，推薦斷路器規格與導線截面積Power 7 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. ⚡ 變壓器選型Power Voltage 1 根據負載總功率、功率因數與電壓等級，計算視在功率、計算電流，推薦標準變壓器容量與負載率Power Voltage 1 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 可回收性評估Lifespan 8 輸入材料型別、質量、回收率與原生/再生能耗，計算可回收指數、節能效益、碳減排與等效環境效益，為綠色材料選型與產品全生命週期評估提供量化決策資料。Lifespan 8 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 可回收材料評估Lifespan 10 輸入材料型別與工況條件，綜合評估可回收性評分、預計使用壽命與環境適配度Lifespan 10 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🛍️ 境外購物退稅估算（通用）Overseas Shopping Tax Refund Estimate ( General ) 輸入購物金額、退稅率與手續費率，估算應退稅額、手續費及實際到手金額，並支援匯率換算。Overseas Shopping Tax Refund Estimate ( General ) - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of... ➗ 複數計算器（通用）Complex Calculator ( General ) 輸入兩個複數的實部與虛部，自動計算加、減、乘、除結果及各自的極座標（模與輻角）。Complex Calculator ( General ) - calculate online, free and accurate. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of... 🔧 多光譜（NDVI）分析Analysis 21 多光譜 NDVI 分析工具。輸入近紅外與紅光反射率，計算歸一化植被指數 NDVI，用於遙感植被覆蓋、作物長勢與生態監測的分析參考（結果僅供參考）。Analysis 21 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 安裝（施工/除錯/檢測）服務Detector 173 裝置安裝服務工具。輸入裝置型別、安裝環境、功率與電壓，生成安裝檢查與除錯指南（含裝置與環境建議），用於工程裝置安裝前的方案自檢。Detector 173 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 密封件壽命計算Lifespan 7 基於 Arrhenius 熱老化模型與 PV 值評估，輸入密封材質、工作溫度、壓力與轉速，綜合溫度、壓力、速度與介質因子估算密封件使用壽命，為密封設計與備件更換計劃提供依據。Lifespan 7 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 導線載流選型Voltage 9 輸入電流、環境溫度、敷設方式與線路長度，按載流量選擇銅導線截面，並校驗線路壓降和線損功率，滿足載流量與壓降雙重要求。Voltage 9 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 工業泵選型Industrial Pump Selector 輸入流量、揚程與介質型別（清水/腐蝕性液體等），計算工業泵的軸功率與電機功率，並從標準序列推薦泵型、材質與轉速，用於泵選型。Select an industrial pump from flow rate, head and medium type. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the G... 🔧 工業裝置功率匹配Industrial Equipment Power Matching 輸入負載力、運動速度和傳動效率，計算所需理論功率與選型功率，並從標準電機功率序列中推薦合適的電機規格，同時估算額定扭矩和電流，用於機械傳動系統的電機選型。Match motor power to load, speed and drive efficiency. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General En... 🏗️ 工程投資估算Engineering Investment Estimate 輸入建築面積與各分項單價指標（如土建、安裝、裝修），快速估算工程總投資概算及單方造價，輔助專案前期投資測算。Engineering Investment Estimate - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engin... 📊 工程造價指數計算Construction Cost Index Calculator 輸入基期與報告期的材料、人工、機械價格及權重，計算各項造價指數與綜合造價指數漲跌幅度。Compute construction cost indices from materials and labor. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Gener... 🧾 工程造價稅率計算Tax 輸入工程不含稅造價，按建築業增值稅 9% 及附加稅費計算各項稅額與含稅造價。Tax - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🏗️ 工程造價調差計算Construction Cost Adjustment Calculator 輸入材料、人工、機械三類要素的基期價、報告期價及權重，計算綜合調差係數、調差額與報告期造價。Adjust project cost by material, labor and equipment indices. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Gen... 🎂 年齡計算（精確到天）Age Calculator (Exact to Day) 輸入出生日期，計算精確年齡（年/月/日）、總天數、下次生日倒計時、生肖與星座。Compute exact age in years, months and days. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering ... 🔧 幻方生成器（奇數階）Generator 25 幻方生成器（奇數階）。輸入奇數階數 n，按經典演算法生成每行/列/對角線之和相等的幻方（含目標和），可直接複製，用於數學遊戲與演算法演示。Generator 25 - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General... 🎰 彩票中獎稅後金額計算Lottery After-Tax Prize Calculator 輸入中獎金額與擬捐贈金額，計算偶然所得稅、稅後所得及公益捐贈可抵稅額。Compute windfall tax and net lottery prize. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering t... 🔧 微加工（精度/熱影響）評估Assessor 20 微加工（精度/熱影響）評估工具。輸入加工精度、熱影響區寬度、切割速度與雷射功率，綜合評估微加工質量並給評分等級，用於雷射/精密加工工藝自檢。Assessor 20 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 快冷材料熱疲勞Lifespan 25 輸入冷卻速率、溫度迴圈幅值與材料引數，按 Coffin-Manson 公式計算熱疲勞壽命Lifespan 25 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 執行器選型Torque Motion 輸入負載力、行程、動作時間與安全係數，計算執行器選型推力與電機功率，支援絲槓推杆、齒輪齒條、蝸輪絲槓三種類型匹配。Torque Motion - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 扭矩補償計算Torque 3 根據系統額定扭矩，考慮溫度膨脹補償、磨損間隙補償和動載荷係數，計算實際所需的補償扭矩，用於傳動系統設計與扭矩裕量評估，確保變工況下輸出精度與可靠性。Torque 3 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 技術支援（設計/選型/檢測）Detector 175 技術支援（設計/選型/檢測）工具。按應用場景推薦裝置型別並給出設計、選型與檢測要點，用於售前技術支援方案的快速生成與對照。Detector 175 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. ⚙️ 投資（偏差/分析/糾偏）方法Investment 投資（偏差/分析/糾偏）方法工具。輸入計劃與實際投資資料，計算偏差率並按通用財務規則給出糾偏建議，用於工程專案投資管控（結果僅供參考）。Investment - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 抗風（等級）效能評估Assessor 19 抗風（等級）效能評估工具。輸入建築高度、體型與基本風壓，按 μz、βz 等係數評估抗風等級與風荷載，用於建築與幕牆抗風設計參考。Assessor 19 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. ⚙️ 指標（單方/平米/延米）分析Metric 指標（單方/平米/延米）分析工具。輸入工程量的單價與面積/長度基數，測算單方、平米、延米等指標值，用於工程造價與材料用量核算（結果僅供參考）。Metric - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔄 換熱器選型計算Heat Exchanger Sizing Calculator (LMTD) 根據熱流量、冷熱流體進出口溫度與總傳熱係數，計算對數平均溫差（LMTD）與所需換熱面積Size a heat exchanger by LMTD method. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 攪拌摩擦焊引數計算Pressure Weld 輸入主軸轉速、下壓力與焊接速度，估算摩擦熱輸入功率及單位線能量（基於軸肩摩擦模型）。Pressure Weld - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 數字謎題生成（24點遊戲）Generator 24 隨機給出四張牌生成 24 點題目，可求解提示與步驟，適合算術思維訓練與聚會遊戲，純前端出題。Generator 24 - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General... 🚁 無人機巡查效率計算Speed 7 輸入飛行引數與相機視場角，估算單航線地面覆蓋面積、有效掃描頻寬及巡查作業時間。Speed 7 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🛸 無人機懸停誤差計算Drone Hovering Error Calculator 輸入 GPS 定位精度、氣壓計精度與風速，估算無人機懸停時的水平、垂直位置誤差及綜合誤差。Estimate UAV hover error from GPS, barometer and wind effects. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Ge... 🚁 無人機航程計算Calc Speed Capacity 輸入電池容量、平均電流與飛行速度，估算無人機續航時間、最大航程與電池能量。Calc Speed Capacity - calculate online, free and accurate. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Genera... 📡 無線圖傳距離估算Distance Power Frequency 輸入發射功率、頻率、收發天線增益與接收靈敏度，用 Friis 自由空間路徑損耗公式估算視距最大傳輸距離。Distance Power Frequency - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering ... 📅 日期差計算（工作日/自然日）Date Difference Calculator (Workdays / Calendar Days) 輸入起止日期，計算自然日天數、工作日天數（排除週末）、相隔週數與月數。Compute calendar and workday differences between two dates. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Gener... 🔧 替代（產品/方案/推薦）支援Alternative - ( Product / Plan / Recommend ) Support 替代（產品/方案）推薦工具。按輸入的產品或方案特徵，生成可替代的產品/方案推薦清單，用於選型比價與備選方案快速生成。Alternative - ( Product / Plan / Recommend ) Support - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part... 🔧 材料週轉率計算Turnover 2 輸入當前庫存量、日均消耗量與採購週期，計算庫存週轉率、週轉天數、建議庫存量與再訂購點，幫助最佳化庫存、降低資金佔用。Turnover 2 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 材料疲勞壽命Lifespan 4 輸入應力幅、平均應力與抗拉強度，按 Goodman 修正與 Basquin 公式估算疲勞壽命Lifespan 4 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 校準（校驗/維修/檢測）服務Detector 139 計量裝置校準服務工具。輸入裝置型別、精度等級、使用年限與上次校準間隔，計算建議校準週期並給出校準專案指南，用於計量器具週期管理。Detector 139 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 檢測（冷卻/老化/成分）服務Detector Composition Aging 冷卻系統三項檢測工具。評估冷卻效率、老化後效能保持率與成分合格率三項指標，輸出合格判定，檢測報告可用於質量驗收，用於冷卻系統維護自檢。Detector Composition Aging - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineerin... 🔧 檢測（剛度/載荷/疲勞）服務Detector 159 機械部件三項力學效能檢測工具。評估剛度、額定載荷與疲勞壽命並做合格判定，註明僅作工程估算與自檢參考、正式報告須由第三方機構完成。Detector 159 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 檢測（壓縮/回彈/老化）服務Detector Aging 2 泡沫材料三項檢測工具。評估壓縮強度、回彈率與老化後質量變化三項指標，輸出合格判定，檢測報告可用於質量驗收，用於泡沫材料品質自檢。Detector Aging 2 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 檢測（孔徑/強度/壽命）服務Detector Strength Lifespan 零件三項檢測工具。評估孔徑偏差、抗拉強度與使用壽命三項指標，輸出合格判定，檢測報告可用於質量驗收，用於機械零件進場自檢。Detector Strength Lifespan - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineerin... 🔧 檢測（密封/壓力/扭矩）服務Detector Pressure Torque 閥門三項檢測工具。評估密封洩漏率、耐壓與擰緊扭矩三項指標，輸出合格判定，檢測報告可用於質量驗收，用於閥門進場自檢。Detector Pressure Torque - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering ... 🔧 檢測（導熱/阻燃/環保）服務Detector 121 建築保溫材料三項檢測工具。評估導熱係數、阻燃等級與環保達標率三項指標，輸出合格判定與檢測報告可用性提示，用於保溫材料進場驗收自檢。Detector 121 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 檢測（張力/長度/壽命）服務Detector Length Lifespan 帶材三項檢測工具。評估張力強度、長度偏差與疲勞壽命三項指標，輸出合格判定，檢測報告可用於質量驗收，用於帶材品質自檢。Detector Length Lifespan - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering ... 🔧 檢測（成分/效能/質量）服務Detector Composition 1 材料三項檢測工具（成分/效能/質量）。評估主成分含量、效能合格率與質量綜合評分三項指標，輸出合格判定，檢測報告可用於質量驗收，用於材料進場自檢。Detector Composition 1 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering to... 🔧 檢測（成分/純度/環保）服務Detector Composition 化工產品三項檢測工具（成分/純度/環保）。評估成分符合率、純度與環保達標率三項指標，輸出合格判定，檢測報告可用於質量驗收，用於化工品進場自檢。Detector Composition - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 檢測（扭矩/硬度/尺寸）服務Detector Hardness Torque 緊韌體三項檢測工具。評估擰緊扭矩、硬度與尺寸偏差三項指標，輸出合格判定，檢測報告可用於質量驗收，用於緊韌體進場自檢。Detector Hardness Torque - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering ... 🔧 檢測（抗壓/抗滲/環保）服務Detector 131 混凝土三項檢測工具。評估抗壓強度、抗滲等級與環保達標率三項指標，輸出合格判定，檢測報告可用於質量驗收，用於混凝土材料進場自檢。Detector 131 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 檢測（振動/遊隙/精度）服務Detector 155 軸承三項檢測工具。評估振動速度、遊隙與旋轉精度三項指標（依據 GB/T），輸出合格判定，檢測報告可用於質量驗收，用於軸承進場自檢。Detector 155 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 檢測（接地電阻/防雷）服務Detector Resistance 1 電氣系統三項檢測工具（接地/防雷）。評估接地電阻、防雷等級與等電位連線電阻三項指標，輸出合格判定，檢測報告可用於質量驗收，用於電氣安全自檢。Detector Resistance 1 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 檢測（斷裂/伸長/耐磨）服務Detector 134 橡膠材料三項檢測工具。評估斷裂強力、斷裂伸長率與磨耗量三項指標，輸出合格判定，檢測報告可用於質量驗收，用於橡膠製品品質自檢。Detector 134 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 檢測（無損/水壓/氣密）服務Detector Water Pressure 壓力容器三項檢測工具。評估無損檢測合格率、水壓保壓時間與氣密洩漏率三項指標，輸出合格判定，檢測報告可用於質量驗收，用於壓力容器進場自檢。Detector Water Pressure - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering t... 🔧 檢測（濃度/PH/細菌）服務Detector Concentration 消毒液三項檢測工具。評估濃度、PH 值與細菌總數三項指標（依據 GB/T），輸出合格判定，檢測報告可用於質量驗收，用於消毒產品進場自檢。Detector Concentration - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering to... 🔧 檢測（濃度/PH/防鏽）服務Detector Concentration 1 切削液三項檢測工具。評估濃度、PH 值與防鏽等級三項指標（依據 GB/T），輸出合格判定，檢測報告可用於質量驗收，用於切削液維護自檢。Detector Concentration 1 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering ... 🔧 檢測（清洗/腐蝕/殘留）服務Detector Corrosion 清洗劑三項檢測工具。評估清洗效率、腐蝕速率與殘留物三項指標，輸出合格判定，檢測報告可用於質量驗收，用於工業清洗劑進場自檢。Detector Corrosion - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 檢測（滴點/錐入度/腐蝕）服務Detector Corrosion 1 潤滑脂三項檢測工具。評估滴點、錐入度與腐蝕試驗三項指標（依據 GB/T），輸出合格判定，檢測報告可用於質量驗收，用於潤滑脂品質自檢。Detector Corrosion 1 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 檢測（鹽霧/溼熱/吸附）服務Detector 205 材料三項耐候檢測工具。評估耐鹽霧、耐溼熱與吸附效能三項指標（依據 GB/T），輸出合格判定，檢測報告可用於質量驗收，用於塗層/材料耐候性自檢。Detector 205 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 檢測（硬度/磨耗/壽命）服務Detector Hardness Lifespan 1 工具鋼三項檢測工具。評估硬度、磨耗量與使用壽命三項指標（依據 GB/T），輸出合格判定，檢測報告可用於質量驗收，用於工具鋼品質自檢。Detector Hardness Lifespan 1 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineer... 🔧 檢測（粒度/濃度/PH）服務Detector Concentration 2 粉體材料三項檢測工具。評估平均粒度、懸浮液濃度與 PH 值三項指標，輸出合格判定，檢測報告可用於質量驗收，用於粉體進場自檢。Detector Concentration 2 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering ... 🔧 檢測（粒度/硬度/壽命）服務Detector Hardness Lifespan 磨料三項檢測工具。評估平均粒度、硬度與使用壽命三項指標（依據 GB/T），輸出合格判定，檢測報告可用於質量驗收，用於磨料品質自檢。Detector Hardness Lifespan - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineerin... 🔧 檢測（粘度/水分/酸值）服務Detector 200 潤滑油三項檢測工具（粘度/水分/酸值）。評估運動黏度、水分含量與酸值三項指標，輸出合格判定，檢測報告可用於質量驗收，用於潤滑油衰變進場自檢。Detector 200 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 檢測（粘接/耐久/環保）服務Detector 126 結構膠三項檢測工具。評估粘接強度、老化保持率與環保達標率三項指標，輸出合格判定，檢測報告可用於質量驗收，用於結構膠粘劑進場自檢。Detector 126 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 檢測（粘結/抗滲/環保）服務Detector 123 防水材料三項檢測工具。評估粘結強度、抗滲等級與環保達標率三項指標，輸出合格判定，檢測報告可用於質量驗收，用於防水工程材料自檢。Detector 123 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 檢測（純度/含水量/雜質）服務Detector 211 化工原料三項檢測工具。評估純度、含水量與雜質含量三項指標，輸出合格判定，檢測報告可用於質量驗收，用於化工原料進場自檢。Detector 211 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 檢測（純度/水分/酸值）服務Detector 213 化工產品三項檢測工具。評估純度、水分含量與酸值三項指標，輸出合格判定，檢測報告可用於質量驗收，用於化工品品質進場自檢。Detector 213 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 檢測（絕緣/電阻/老化）服務Detector Resistance Aging 絕緣材料三項檢測工具（絕緣/電阻/老化）。評估絕緣電阻、體積電阻率與老化後保持率三項指標，輸出合格判定，檢測報告可用於質量驗收，用於絕緣材料維護自檢。Detector Resistance Aging - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering... 🔧 檢測（絕緣/電阻/耐壓）服務Detector Resistance 高壓絕緣材料三項檢測工具。評估絕緣電阻、體積電阻率與耐壓三項指標，輸出合格判定，檢測報告可用於質量驗收，用於高壓絕緣材料進場自檢。Detector Resistance - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 檢測（耐壓/耐溫/老化）服務Detector Aging 絕緣材料三項檢測工具。評估耐壓值、耐溫值與老化壽命三項指標（依據 GB/T），輸出合格判定，檢測報告可用於質量驗收，用於絕緣材料進場自檢。Detector Aging - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 檢測（耐熱/老化/安全）服務Detector Aging 1 材料三項耐熱檢測工具。評估耐熱溫度、老化後保持率與安全等級三項指標，輸出合格判定，檢測報告可用於質量驗收，用於材料耐老化自檢。Detector Aging 1 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 檢測（耐磨/拉伸/疲勞）服務Detector Stretch 材料三項力學效能檢測工具。評估耐磨性、拉伸強度與疲勞效能三項指標，輸出合格判定，檢測報告可用於質量驗收，用於材料力學自檢。Detector Stretch - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 檢測（脫模效果/殘留/環保）服務Detector 207 脫模劑三項檢測工具。評估脫模力、殘留量與環保達標率三項指標，輸出合格判定，檢測報告可用於質量驗收，用於脫模劑進場自檢。Detector 207 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 檢測（超聲/磁粉/水壓）服務Detector Water Pressure 1 焊縫三項檢測工具。評估超聲檢測靈敏度、磁粉檢測等級與水壓試驗三項指標，輸出合格判定，檢測報告可用於質量驗收，用於焊接質量自檢。Detector Water Pressure 1 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering... 🔧 檢測（防爆/密封/防護）服務Detector Protection 2 電氣裝置三項檢測工具。評估防爆等級、密封等級與防護等級（IP）三項指標，輸出合格判定，檢測報告可用於質量驗收，用於電氣裝置進場自檢。Detector Protection 2 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 檢測（黏度/水分/閃點）服務Detector 128 潤滑油三項檢測工具。評估運動黏度、水分含量與閃點三項指標，輸出合格判定，檢測報告可用於質量驗收，用於潤滑油品質進場自檢。Detector 128 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🌾 植保噴灑流量計算Calc Flow 輸入噴頭流量、噴頭數量、噴幅與作業速度，計算每畝藥液用量與作業效率，輔助植保無人機/噴霧機施藥規劃。Calc Flow - calculate online, free and accurate. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineer... 📐 模具配合計算Mold Fit Calculator (ISO 286) 依據 ISO 286 公差體系，根據基本尺寸與配合代號（如 H7/g6）計算孔軸上下偏差及配合間隙/過盈Compute mold fits per ISO 286 (GB/T). Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🏗️ 模板支撐間距計算Formwork Support Spacing Calculator 按混凝土側壓力與單根支撐容許荷載（承載面積法）計算模板支撐間距與所需支撐根數Compute formwork support spacing by bearing-area method. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General ... 🎈 氣體純度流量計算Pressure Flow 6 根據目標純度與原料氣純度，計算配製所需高純氣和稀釋氣的配氣流量與混合比例，用於實驗室配氣、工業混合氣體制備等需要精確控制氣體濃度的場景。Pressure Flow 6 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 💧 水刀切割能力計算Pressure 5 輸入水壓、磨料流量、材料型別與厚度，評估水刀切割能力並估算切割速度與每米耗時。Pressure 5 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 水基液壽命計算Lifespan 24 依據濃度、溫度和 ISO 汙染度等級，綜合評估水基切削液/冷卻液的使用壽命，考慮濃度偏差、微生物繁殖與汙染程度對液體劣化的影響，為液體維護、補充與更換提供資料支援。Lifespan 24 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🚰 水泵選型計算Flow 14 根據流量、揚程、介質密度與泵效率，計算水力功率、軸功率、電機功率並推薦標準電機規格Flow 14 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🎨 塗料用量計算Concentration 22 根據塗布面積、幹膜厚度、固含量與損耗率，計算理論用量與實際用量（L/kg）Concentration 22 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 潤滑油更換週期Lubricant Change Interval Calculator 輸入油箱容量、工作溫度與日執行時間，基於 Arrhenius 溫度法則估算礦物油、半合成油、全合成油的推薦換油週期，制定潤滑計劃。Estimate lubricant change interval by Arrhenius law from oil capacity. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part o... 🛢️ 潤滑油粘度選型Lubricant Viscosity Selector 根據工況溫度、載荷和轉速，對照 ISO 粘度等級推薦合適的潤滑油型別和粘度級別，用於齒輪箱、軸承等摩擦副的潤滑選型與換油規範制定。Select lubricant viscosity by temperature, load and speed. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Genera... 🔧 液壓缸選型計算Flow Itinerary 根據缸徑、行程、系統壓力與活塞桿直徑，計算推力、拉力、單行程容積與所需流量Flow Itinerary - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🧱 混凝土配合比計算（通用）Calc Strength Ratio 輸入強度等級、水泥標號與骨料型別，按 Bolomey 公式計算水灰比及每立方米混凝土材料用量。Calc Strength Ratio - calculate online, free and accurate. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Genera... 🔆 雷射切割深度估算Power Focal 輸入雷射功率、焦距、切割速度與材料型別，基於線能量法估算最大切割深度、光斑直徑與功率密度。Power Focal - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔴 雷射焊接光斑計算Laser Welding Spot Calculator 輸入雷射功率、離焦量、光束質量 M² 與焦距，計算聚焦光斑直徑、離焦光斑直徑與功率密度。Compute laser weld spot size from Gaussian focus, M^2 and defocus. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of th... 🔵 雷射熔覆厚度計算Laser Cladding Thickness Calculator 輸入粉末流量、掃描速度與雷射功率，估算單道熔覆層厚度、寬度、搭接步距與沉積速率。Estimate single-pass laser cladding height from powder mass and parabolic cross-section. Free online tool on ToolBox — 100% client-side, no data uploaded, ... 🌡️ 熱成像溫差判讀Thermal Imaging Delta-T Reader 輸入環境溫度、目標發射率、檢測距離等，估算紅外熱像儀最小可分辨溫差（MRTD）與發射率引起的測量誤差。Read infrared thermal delta-T from ambient temp and emissivity. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the G... 🔥 焊接工藝引數Welding Process Parameter Calculator 根據母材材料厚度和所選焊接方法（如 MIG、TIG、手工電弧焊），計算推薦焊接電流、電弧電壓、焊接速度與熱輸入，指導工藝評定與現場焊接引數設定。Set welding parameters by material thickness and process (SMAW/TIG/MIG). Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part... 💡 照明色溫亮度配置Color Temp 2 選擇應用場景獲取推薦色溫與照度，輸入房間面積計算所需總光通量與燈具數量。Color Temp 2 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. ⛽ 燃油摻配比例計算Ratio Fuel Oil 按體積比例摻配兩種燃油，計算混合油的密度、熱值與能量密度，並評估摻配後的燃燒特性，用於船舶、鍋爐等需要臨時調配燃料以降低成本的混合油配製。Ratio Fuel Oil - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🌿 環保耐磨評估Eco-Friendly Wear Resistance Evaluator 輸入材料型別、工作溫度與溼度等使用環境引數，綜合評估材料的耐磨等級與環保性評分，為綠色選材與產品改進提供依據。Evaluate eco-friendly wear resistance by material and environment (temp, humidity). Free online tool on ToolBox — 100% client-side, no data uploaded, no in... 🔧 生物穩定壽命評估Lifespan 5 輸入工作溫度、溼度、pH 值與紫外線強度，基於 Arrhenius 動力學與 Q10 溫度係數估算材料的生物穩定性壽命，為材料選型與維護週期提供參考。Lifespan 5 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🧪 電化學鈍化控制Electrochemical Passivation Controller 輸入電位、電流密度與 pH 值，依據鐵的 Pourbaix 圖判斷所處區間（免蝕/活化/鈍化/過鈍化）並估算腐蝕速率。Control electrochemical passivation of iron by the Pourbaix (E-pH) diagram. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. P... 🔌 電子束焊接引數Voltage 輸入加速電壓、束流與焊接速度，計算電子束功率、線能量、功率密度及估算熔深。Voltage - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🛠️ 電機軸承維護週期Motor Bearing Maintenance Interval 依據速度因數 dn 值與潤滑方式，估算軸承補油（補脂/換油）週期與整體更換週期Estimate motor bearing maintenance interval from bore and speed (dn factor). Free online tool on ToolBox — 100% client-side, no data uploaded, no install. ... 🏭 電機選型Power Voltage 根據負載轉矩、轉速與電壓，計算所需功率，推薦標準電機功率等級、極數與電機系列型號Power Voltage - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. ⚡ 電機選型計算Motor Sizing Calculator 根據負載功率、轉速與傳動效率計算所需電機功率，匹配 IEC 標準功率等級並核算轉矩Compute required motor power from load and efficiency. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General En... 🔧 電纜截面積選型Voltage 8 根據載流量、電纜芯數、敷設方式和環境溫度，計算綜合校正係數並從銅芯電纜標準截面序列中推薦合適規格，適用於供配電系統電纜選型與線路載流能力校核。Voltage 8 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. ⚡ 電解速率計算Voltage Current 1 基於法拉第電解定律，輸入電流、電解時間與電化當量，計算沉積質量、鍍層厚度與電流效率。Voltage Current 1 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. ⚙️ 皮帶傳動選型Power 16 根據傳遞功率、主動輪轉速與傳動比，推薦 V 帶型號、最小帶輪直徑、帶速、中心距與基準長度Power 16 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 皮帶張緊計算Belt Tension Calculator 根據 V 帶型號、中心距、小帶輪轉速和傳動功率，計算帶速、所需皮帶根數、單根張緊力、總張緊力和跨距中點撓度，為皮帶傳動系統的安裝、除錯與張力調整提供資料依據。Calculate V-belt tension from pitch, center distance, speed and power. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part o... 🔧 磨損率計算Wear 4 基於 Archard 磨損方程，輸入材料硬度、接觸壓力、滑動速度與摩擦係數，計算體積磨損率與預估磨損深度Wear 4 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🛠️ 磨料硬度選型Hardness 14 根據工件材料硬度與加工型別（粗磨/精磨/拋光），推薦合適的磨料種類、粒度號與砂輪線速度Hardness 14 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. ⚛️ 離子束濺射計算Ion Beam Sputtering Calculator 輸入離子能量、入射角、靶材原子序數與離子電流密度，估算濺射產額與刻蝕速率。Compute ion beam sputtering yield from energy, angle, target Z and current density. Free online tool on ToolBox — 100% client-side, no data uploaded, no in... 🔧 科學記數法轉換（標準↔小數）Convert 21 在科學記數法與標準小數之間互轉，處理超大或極小數值並保留有效數字，適合科學計算與作業校對，純前端換算。Convert 21 - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Eng... 🧪 稀釋配比計算器Calc Ratio 2 輸入原液濃度、目標濃度與需要配製的總量，計算原液與水的用量及稀釋倍數。Calc Ratio 2 - calculate online, free and accurate. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engin... 🌬️ 空氣質量指數計算Air Quality Exponent Calculate 輸入六項汙染物濃度，按國標 HJ 633-2012 計算 AQI、首要汙染物及健康建議（CO 輸入 mg/m³）。Air Quality Exponent Calculate - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engine... 🔧 空調冷負荷計算AC Cooling Load Calculator 綜合圍護結構傳熱、日射得熱、人員散熱、裝置發熱、照明發熱和新風負荷，逐項計算房間總冷負荷並推薦空調配置方案，適用於住宅、辦公室等空間的空調系統選型。Compute HVAC cooling load from envelope, solar, occupancy and equipment gains. Free online tool on ToolBox — 100% client-side, no data uploaded, no install... ⚡ 等離子切割厚度計算Speed 9 輸入切割電流、切割速度、弧溫與噴嘴孔徑，估算等離子弧最大可切厚度與切縫寬度。Speed 9 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🧊 管道保溫層厚度計算Pipe Insulation Thickness Calculator 按控制保溫表面溫度（預設 50℃）的穩態導熱模型，迭代求解保溫層厚度並核算散熱損失Compute insulation thickness to control surface temperature. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Gene... 🧲 粘結強度計算Bond Strength Calculator 根據粘結面積和膠水剪下強度，計算接頭可承受的最大載荷與安全許用載荷，並通過安全係數評估粘結可靠性，用於結構膠接、複合材料粘接等裝配工藝的強度校核。Compute adhesive bond strength from area and shear strength. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Gene... 🔧 精密裝置選型Precision Equipment Selector 依據定位精度、負載、行程和移動速度等要求，推薦合適的直線導軌規格（HGR 系列）和滾珠絲槓引數（直徑、導程、精度等級），並計算所需轉速和驅動扭矩，用於精密自動化裝置設計。Select precision equipment by accuracy, load, stroke and speed. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the G... 🔧 精密軸承壽命Lifespan 20 輸入精度等級、載荷與轉速，計算精密軸承 L10 額定壽命與精度保持壽命Lifespan 20 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 緊韌體強度校核Strength 34 輸入螺栓規格、強度等級與受力狀態（拉伸/剪下），校核螺栓的拉伸應力與剪下應力是否滿足許用要求，判斷緊韌體連線是否安全可靠。Strength 34 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 紀念幣/郵票品相評分輔助Rater 1 按 NGC/Sheldon 70 分制（紀念幣）與 PSE 100 分制（郵票）的瑕疵扣分模型，輔助評估品相等級Rater 1 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. ✂️ 線切割精度計算Speed 8 輸入鉬絲徑、切割速度與工件厚度，估算實際進給速度、表面粗糙度 Ra 及對應加工精度等級。Speed 8 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 📈 線性迴歸計算器（通用）Linear Regression Calculator ( General ) 線性迴歸計算器（通用）。輸入多組 (x,y) 資料點，最小二乘擬合直線、給出斜率截距與相關係數，用於趨勢預測與相關性分析，需至少 2 組資料。Linear Regression Calculator ( General ) - calculate online, free and accurate. Free online tool on ToolBox — 100% client-side, no data uploaded, no instal... 🔧 統計學分佈計算（正態/泊松/二項）Calc Stats 1 統計學分佈計算器。輸入引數後計算正態分佈、泊松分佈、二項分佈的密度/機率與分位數，用於機率統計教學與資料分析的即時演算。Calc Stats 1 - calculate online, free and accurate. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engin... 🔧 維修（修復/更換/測試）服務Tester 40 裝置維修（修復/更換/測試）服務工具。輸入裝置型別、故障型別、維修方式與測試專案數，生成維修方案與測試驗收指南，用於運維維修排程。Tester 40 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 維修（更換/保養/測試）服務Tester Maintenance 裝置保養（更換/保養/測試）服務工具。輸入裝置型別、保養等級、使用年限與累計執行小時，生成保養計劃與更換清單，用於預防性維護管理。Tester Maintenance - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 維修（更換/調整/檢測）服務Detector 194 裝置維修服務工具。輸入裝置型別、故障現象、使用年限與執行狀態，生成故障維修方案與檢查清單（含裝置與故障提示），用於運維維修的自檢與排程。Detector 194 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. ⚙️ 耐磨性評估計算Wear Resistance Evaluator 基於 Archard 磨損方程，計算材料在滑動摩擦條件下的磨損率和耐磨等級Evaluate wear resistance with the Archard wear equation. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General ... 🔧 耐腐蝕壽命Lifespan Corrosion 根據材料腐蝕速率、初始壁厚和腐蝕裕量，結合環境等級修正，計算裝置和管道的剩餘壽命、當前壁厚和建議檢測週期，為腐蝕防護、裝置管理與檢修計劃提供決策依據。Lifespan Corrosion - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 聯軸器選型Torque 2 輸入額定扭矩、工況係數與安全係數，計算選型扭矩的大小，並推薦彈性柱銷、齒式、膜片或萬向等聯軸器型別，適用於各類傳動場合。Torque 2 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 能耗（統計/預測）儀表Stats Energy 錄入分項能耗資料生成趨勢與佔比圖表，按歷史估算短期用量，用於用電管理與節能分析，純前端視覺化不出境。Stats Energy - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🛡️ 腳手架安全驗算Scaffold Safety Verification 按扣件式鋼管腳手架（Φ48×3.5）立杆穩定性公式，驗算軸力、長細比與安全係數Verify single-standard coupler scaffold safety under load. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Genera... 🏗️ 腳手架用鋼量計算Scaffold Steel Quantity Calculator 按雙排扣件式鋼管腳手架（Φ48×3.5）估算立杆、橫杆、剪刀撐數量與總用鋼量Compute steel quantity for double-row coupler scaffolds. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General ... 🎨 色差強度質量評估Strength Color Diff 輸入標準樣與試樣的 CIE Lab 色度值，計算 ΔE 色差、色牢度灰卡等級並給出合格判定。Strength Color Diff - compare online, free and clear. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Eng... 🔧 節能壽命計算Lifespan 12 輸入裝置功率、執行時間、節能率與電價，計算全壽命期節能收益與投資回報週期Lifespan 12 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🌱 節能方案計算Energy-Saving Plan Calculator 輸入裝置功率、執行時間與節能率，計算年節電量、節約電費、碳減排及節能改造投資回收期。Estimate annual energy savings from power, runtime and saving rate. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of t... 🔬 蝕刻時間計算Temp Time Concentration 根據蝕刻液濃度和溫度估算蝕刻速率，計算達到目標刻蝕深度所需的時間，並提示溫度波動對均勻性的影響，用於半導體、PCB 及金屬表面處理中的蝕刻工藝控制。Temp Time Concentration - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering t... 🔧 螺栓擰緊扭矩Torque 根據螺栓規格（M6-M30）、強度等級（4.8-12.9 級）和摩擦係數，計算擰緊扭矩、預緊力和實際應力，為螺栓裝配提供準確的扭矩控制參考，防止過緊或預緊不足。Torque - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔩 螺紋加工引數Thread 4 根據螺紋規格（如 M10×1.5）和材料型別，計算切削速度、主軸轉速和每轉進給量，並給出推薦刀具與切削液建議，用於車削、攻絲等螺紋加工工藝的引數設定。Thread 4 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🏗️ 裝置租賃費率計算Equipment Lease Rate Calculator 輸入裝置原值、預計租期、折舊年限與維護費率，計算月折舊、月租金、總租金收入及投資回報率。Compute equipment lease rate by straight-line depreciation, maintenance and target margin. Free online tool on ToolBox — 100% client-side, no data uploaded... 🔧 裝置維護週期Equipment Maintenance Interval Calculator 根據裝置型別、執行工況與負荷水平，計算潤滑、巡檢、大修等推薦維護週期，為工廠裝置管理制定預防性維護計劃，降低突發故障與停機損失。Plan equipment maintenance interval by type and daily runtime. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Ge... ✅ 質量驗收抽樣Acceptance Sampling Planner 基於計數標準型抽樣檢驗，輸入批次、樣本、判定數和發現不合格品數，判定批次接收/拒收Plan acceptance sampling by lot size N and standard attribute plans. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of ... 🔧 質量（標準/檢測/環保）保障Detector 118 質量（標準/檢測/環保）保障工具。輸入產品標準符合度、檢測合格率與環保達標情況，綜合評分並給出提升建議（推進體系認證、提升合格率），用於質量管控參考。Detector 118 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 📡 超聲加工引數Frequency 15 輸入超聲頻率、振幅與工具直徑，計算振動速度、加速度、功率密度及材料去除率。Frequency 15 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. ⚙️ 軸承當量負荷計算Bearing Load 根據徑向力 Fr、軸向力 Fa 及徑向/軸向載荷係數 X、Y，計算當量動載荷 P = X·Fr + Y·FaBearing Load - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔩 軸承額定壽命計算Bearing 1 依據 ISO 281 基本額定壽命公式 L10=(C/P)ᵖ，計算軸承疲勞壽命（百萬轉 / 小時 / 年）Bearing 1 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 輸送帶選型計算Conveyor Belt Sizing Calculator 根據輸送量、輸送距離和傾角，採用槽形截面物料流公式與 DIN 22101 簡化功率模型，計算所需頻寬和驅動功率，適用於散料輸送帶的初步選型與電機配置。Size conveyor belt width and drive power from capacity, distance and incline. Free online tool on ToolBox — 100% client-side, no data uploaded, no install.... 🔧 邏輯真值表生成器（表示式輸入）Generator 23 輸入邏輯表示式自動生成真值表並標出結果列，支援多變數與常用門，適合數位電路與離散數學學習，純前端。Generator 23 - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General... ⛓️ 鏈傳動選型計算Speed 26 輸入傳遞功率、轉速與傳動比，按功率曲線推薦滾子鏈條型號與鏈輪齒數，並計算鏈條線速度，適用於機械傳動的鏈條選型設計。Speed 26 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🏭 閥門選型計算Pressure Flow 5 根據流量、壓差和介質密度計算閥門的 Cv/Kv 流量係數，並結合標準通徑系列推薦合適的閥門口徑，用於管道系統中調節閥、截止閥等閥門的選型與校核。Pressure Flow 5 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🛡️ 防爆電氣選型Temp 26 根據爆炸性氣體類別（IIA/IIB/IIC）和溫度組別（T1-T6），組合生成防爆標誌，提供典型氣體參考、裝置表面溫度限值與推薦裝置型別，輔助危險場所的防爆電氣選型。Temp 26 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 防腐塗層壽命Lifespan 6 按 ISO 12944 標準，輸入塗層厚度、腐蝕速率、環境等級（C1–C5）與已使用年限，計算防腐塗層剩餘壽命與健康度，並給出維護建議。Lifespan 6 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 陶瓷軸承壽命計算Ceramic Bearing Life Calculator 輸入軸承載荷與轉速，計算陶瓷（混合）軸承 L10 額定壽命並對比鋼軸承Compute ceramic bearing L10 rated life by ISO 281. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engine... 🔧 面料克重計算Fabric 1 輸入紗線線密度、經緯密度與幅寬，計算面料每平方米克重（GSM）及總重量Fabric 1 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 面料質量評估Fabric 3 輸入經緯紗支數、密度、縮水率與色牢度，計算織物緊度、估算克重並給出質量等級（A/B/C）與改進建議，用於面料品質檢驗。Fabric 3 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🌀 風機選型計算Fan Sizing Calculator 輸入所需風量、風壓與轉速，計算風機的軸功率並推薦電機功率與風機型別（離心/軸流），用於通風除塵與空調系統的風機選型。Size fan shaft and motor power from airflow and pressure. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General... 🔧 香菸尼古丁/焦油含量換算Convert Content 香菸尼古丁/焦油含量換算器。輸入含量與換算係數，在質量、濃度等口徑間換算尼古丁與焦油指標，用於控煙科普與成分對照，純前端本地處理。Convert Content - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Genera... 🔧 高效能材料壽命Lifespan 9 按 Arrhenius 熱降解模型與應力因子，估算高效能工程材料在工況下的使用壽命Lifespan 9 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools. 🔧 高溫蠕變壽命Lifespan 26 輸入工作溫度、應力與材料常數，按 Larson-Miller 引數估算高溫蠕變斷裂壽命Lifespan 26 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the General Engineering tools.