Compute the area of common plane figures from measured dimensions.
多边形面积与周长计算(鞋带公式),支持动态增减顶点并可视化
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Area by coordinates (shoelace) | A = 0.5 · | sum (x_i · y_(i+1) - x_(i+1) · y_i) | | GB 50026-2020, Code for engineering surveying |
| Vertex ordering | Vertices must follow the boundary in order, clockwise or counter-clockwise, without crossing | GB 50026-2020, Code for engineering surveying |
| Area unit conversion | 1 hectare = 10 000 m²; 1 mu ≈ 666.667 m² | ISO 80000-1:2009, Quantities and units - Part 1 (hectare accepted for use) |
| Perimeter check | Sum the distances between consecutive vertices to check the input | GB 50026-2020, Code for engineering surveying |
面积计算是一款科学研究领域的在线工具。科学研究工具,采用标准科学公式,计算精准。
工作与生活中的相关计算与查询。