📖 教育学习工具

🧮 24 点求解器24 Point Solver 24 点求解器24 Point Solver - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education & Learning tools. 📚 ASCII/Unicode/字符编码转换ASCII / Unicode / Character Encode Convert 在 ASCII、Unicode 码点与字符之间互转，显示码值与编码，便于理解字符集与处理文本编码问题。ASCII / Unicode / Character Encode Convert - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no ... 🎓 GPA计算器GPACalculator GPA 计算器，支持多种 GPA 制度、学分加权与多学期累计，辅助学业成绩统计与申请评估。Convert course grades or scores to GPA across US, Chinese and other scales. Add credits and letter or percentage grades for weighted result—free, browser-only. 📚 XML/HTML/CSS 格式化（已有，可补充）XML / HTML / CSS Format 在线 XML/HTML/CSS 代码格式化与缩进美化工具，统一排版结构、校正层级缩进，便于阅读审查与团队协作，纯前端处理不上传。XML / HTML / CSS Format - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education & Learnin... ✖️ 九九乘法表Multiplication Table 展示可交互的九九乘法表，支持点击高亮与随机出题计时练习，用于小学生乘法背诵与口算训练。Multiplication Table - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education & Learning t... 📝 作文字数统计Essay Word Counter 输入作文文本，统计总字数、字符数与段落数等多维指标，便于对照字数要求与排版，适用于语文作业与考试。Essay Word Counter - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education & Learning tools. 📚 单词记忆Word Memory 单词记忆器，基于艾宾浩斯遗忘曲线以卡片式记忆并支持多词库，辅助长期单词 retention。Word Memory - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education & Learning tools. 🎮 国家测验Country Quiz 随机考查国旗、首都或地理位置对应的国家，限时作答并判分，覆盖全球主要国家，适合地理复习与趣味自测，纯前端运行。Country Quiz - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education & Learning tools. 🎮 国旗测验Flag Quiz 随机展示国旗要求选出对应国家，即时判分并累计成绩，覆盖常见国家，适合地理学习与国旗记忆训练，纯前端可重复练习。Flag Quiz - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education & Learning tools. 📚 字数统计 / 字符统计 / 行数统计Stats 粘贴文本，实时统计字数、字符数与行数，支持中英文分别计数，便于写作字数核对与文本预处理。Stats - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education & Learning tools. 📅 学习计划制定Study Planner 学习计划制定器，支持科目管理、每日每周计划与进度追踪，辅助学习时间安排与自律管理。Study Planner - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education & Learning tools. 📝 学习计划时长分配Study Schedule Planner 输入备考总时长及各学科难度或优先级权重，按比例分配每日或每周学习时长并生成可视化计划，帮助学生在多科目间科学统筹复习进度。Plan study time allocation efficiently. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education & Learning to... 🕐 当前本地时间Timezone Converter 🕐 当前本地时间Timezone Converter - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Edu... ⚖️ 成绩加权计算器Grade Weight Calculator 成绩加权计算器，按各科目权重加权求总评成绩，辅助平时与考试分数综合评定。Grade Weight Calculator - calculate online, free and accurate. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Ed... 📝 成绩计算器Score Calculator 成绩计算器，按平时/期中/期末加权求总分，并支持目标分数倒推所需期末分与排名估算。Score Calculator - calculate online, free and accurate. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education... 🎮 打字游戏Typing Game 按提示逐字输入并计时统计正确率与速度（字/分），提供练习文本与错题回看，适合提升打字熟练度，纯前端运行。Typing Game - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education & Learning tools. ⌨️ 拼音打字练习Pinyin Typing Practice 拼音打字练习器，提供中文打字练习与速度、正确率统计并支持多种文本，纯前端运行、数据不上传。Practice Chinese pinyin typing with on-screen prompts and instant feedback to build speed and accuracy. Runs in your browser, no install—free trainer. 📝 拼音转换器Pinyin Converter 拼音转换器，汉字转拼音并识别多音字、支持批量转换与速查，辅助识字与注音。Pinyin Converter - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Educa... 📚 摘要生成器（基于句子权重）Summary Generator 按句子权重抽取文本关键句生成摘要，可调摘要长度与句子数，适合长文速读与要点提炼，纯前端处理文本不上传。Summary Generator - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Ed... 🔄 教育常用单位转换器Education Unit Converter 教育单位转换器，支持长度、重量、面积、体积、时间、角度等常用单位换算，辅助学习与生活计算。Education Unit Converter - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of t... 🔢 数字记忆训练Number Memory Training 随机生成数字序列，用户按出现顺序回忆输入，记录最长长度与训练成绩，用于锻炼短期记忆力与专注力。Number Memory Training - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education & Learning... 🎮 数学测验Math Quiz 随机生成加减乘除口算题，限时作答并自动判分，可设难度与题量，适合小学生算术练习与日常速算训练，纯前端运行。Math Quiz - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education & Learning tools. 📚 文本去重 / 排序 / 反转Text Deduplicate / Sort / Reverse 在线文本去重、按升序或降序排序、整体内容反转工具，支持多行列表整理、数据清洗与文本预处理，纯前端即时处理。Text Deduplicate / Sort / Reverse - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education ... 📚 时区转换（内置世界主要时区）Time Zone Convert 选择源时区与时间点，转换为世界主要城市的目标时间，自动处理跨日与夏令时，便于跨国沟通与行程安排。Time Zone Convert - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Educ... 📈 标准分Z分数Z-Score (Standard Score) Calculator 输入原始分、均值与标准差计算 Z 分数与百分位，用于成绩标准化比较与正态分布定位，适合教学演示与测验结果分析，纯前端。Compute the z-score of a value in a dataset. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education & Learni... ✏️ 汉字笔画计数器Chinese Stroke Counter 输入汉字，统计其总笔画数并拆解基本笔画（点横竖撇捺折钩提），辅助汉字书写学习与书法练习。Chinese Stroke Counter - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education & Learning... ✅ 测验正确率百分比计算器Quiz Score Percentage 输入答题总数与正确数，计算正确率百分比并给出成绩等级与错题分析，便于测验后快速评估掌握情况。Quiz Score Percentage - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education & Learning ... 🐲 生肖年份转换器Chinese Zodiac 输入年份，转换对应生肖、天干地支与周岁年龄，并展示十二地支与十天干对照，便于了解传统纪年文化。Chinese Zodiac - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education & Learning tools. 📊 考试分数计算器Exam Fraction Calculator 输入各科目分数与权重，计算总分、平均分与达标情况并支持目标分数规划，用于考试成绩分析与复习安排。Exam Fraction Calculator - calculate online, free and accurate. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the E... 📚 考试成绩均分/排名/标准差Exam Score Average / Ranking / Std. Dev. 输入一组考试成绩，计算平均分、排名分布与标准差，量化成绩离散程度，用于班级学情分析与个体差异评估。Compute class average, ranking and standard deviation for exam scores. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part o... 🎯 考试成绩目标计算Exam Score Target Calculator 输入当前成绩、剩余考核权重与目标总分，倒推后续每次考试需达到的平均分，为复习重点提供量化参考。Find the score needed to hit your grade target. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education & Lea... 🧠 艾宾浩斯记忆曲线复习计划Ebbinghaus Curve 依据艾宾浩斯遗忘曲线生成复习时间点（如当天、第 2、4、7、15 天），帮助制定间隔重复计划、提升记忆保持率。Ebbinghaus Curve - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education & Learning tools. 📚 英语单词测试English Vocabulary 英语单词测试器，内置四六级/考研/托福词库随机抽题测试并支持生词本，纯前端判分、数据不上传，辅助背单词。English Vocabulary - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education & Learning tools. 📚 记忆宫殿虚拟格子位置编码生成Generator 26 按规则生成记忆宫殿的虚拟格子与位置编码序列，用于构建记忆挂钩点，辅助地点法记忆训练与素材组织。Generator 26 - generate results online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Educati... 📄 论文字数页数换算Word Count Pages 输入字数，按不同排版标准（字号、行距、页边距）估算文档页数，用于论文与报告篇幅规划与格式核对。Word Count Pages - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education & Learning tools. 📇 识字卡片Chinese Character Flashcards 识字卡片，翻转卡片学习汉字与英文单词(含拼音/音标/释义)，支持键盘操作，适合儿童启蒙与记忆。Free online flashcards for learning Chinese characters. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education... 📚 进制转换（2/8/10/16/36进制）Base Converter - ( 2 / 8 / 10 / 16 / 36 Base ) 在二进制、八进制、十进制、十六进制与三十六进制之间任意互转，用于编程学习与数字系统转换练习。Base Converter - ( 2 / 8 / 10 / 16 / 36 Base ) - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded,... 📚 错题本自动归类与重练提醒Reminder 1 添加错题后自动按学科和错误类型归类，基于间隔重复算法(1/3/7/14天)安排复习，到期自动提醒。Reminder 1 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education & Learning tools. 📚 长度/重量/温度/面积/体积单位换算（内置公式）Length / Weight / Temperature / Area / Volume Unit Convert 在长度、重量、温度、面积、体积等常用单位间按内置公式互转，覆盖公制与英制，便于学习与日常量纲换算。Length / Weight / Temperature / Area / Volume Unit Convert - convert values online, free and instant. 📖 阅读速度计算器Reading Speed Calculator 阅读速度计算器，测量阅读速度与分析效率(中文字/分钟或英文 WPM)并评估理解率，辅助阅读训练。Measure reading speed in characters or words per minute and comprehension rate from text length and time. Supports Chinese and English—free, no upload. 📚 颜色代码转换（HEX/RGB/HSL/CMYK）Color Code Convert - ( HEX / RGB / HSL / CMYK ) 在 HEX、RGB、HSL 与 CMYK 之间互转颜色代码，输入任一格式即得出其余，适合设计与前端取色，纯前端即时换算。Color Code Convert - ( HEX / RGB / HSL / CMYK ) - convert values online, free and instant. Free online tool on ToolBox — 100% client-side, no data uploaded... 🎮 颜色测验Color Quiz 随机显示颜色要求选出名称或 HEX 代码，训练色彩辨识与配色直觉，即时反馈正误，适合设计入门与色彩记忆练习，纯前端。Color Quiz - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education & Learning tools. 🎮 首都测验Capital Quiz 随机出题考查各国首都，限时作答并即时判分，覆盖各大洲国家，适合地理学习自测与课堂小测，纯前端运行可重复练习。Capital Quiz - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education & Learning tools. 📚 高考/考研倒计时（含工作日）Countdown 5 设置考试日期，统计剩余总天数与工作日，记录每日学习时长，追踪备考进度。Countdown 5 - free online tool. Free online tool on ToolBox — 100% client-side, no data uploaded, no install. Part of the Education & Learning tools.