🛋️ 房间面积计算器（矩形、L 形、圆形、多个区域，米/英尺）Room Size Calculator (Rectangle, L-Shape, Circle, Several Areas, Metres or Feet)
计算房间的地面面积、周长、墙面面积和体积。支持矩形、L 形（大矩形减去缺角）、圆形，或把多个矩形区域相加；单位可选米或英尺，并同时换算成 m²、ft²、坪和平方码。可加损耗率估算地板材料用量。本地处理。Works out floor area, perimeter, wall area and volume for a room: rectangle, L-shape (a rectangle minus a cut-out corner), circle, or several rectangles added together, in metres or feet, with the area also in m², ft², ping and square yards. Add a waste allowance to estimate flooring. Processed locally.
使用说明与常见问题How-to & FAQ
「房间面积计算器（矩形、L 形、圆形、多个区域，米/英尺）」是什么？What is the Room Size Calculator (Rectangle, L-Shape, Circle, Several Areas, Metres or Feet) tool?
计算房间的地面面积、周长、墙面面积和体积。支持矩形、L 形（大矩形减去缺角）、圆形，或把多个矩形区域相加；单位可选米或英尺，并同时换算成 m²、ft²、坪和平方码。可加损耗率估算地板材料用量。本地处理。Works out floor area, perimeter, wall area and volume for a room: rectangle, L-shape (a rectangle minus a cut-out corner), circle, or several rectangles added together, in metres or feet, with the area also in m², ft², ping and square yards. Add a waste allowance to estimate flooring. Processed locally.
如何使用「房间面积计算器（矩形、L 形、圆形、多个区域，米/英尺）」？How do I use the Room Size Calculator (Rectangle, L-Shape, Circle, Several Areas, Metres or Feet) tool?
在「房间面积计算器（矩形、L 形、圆形、多个区域，米/英尺）」中，填写「形状」、「单位」、「长」、「宽」、「缺角长」等参数，结果会随输入实时计算并显示在下方。In the Room Size Calculator (Rectangle, L-Shape, Circle, Several Areas, Metres or Feet): Fill in "Shape", "Unit", "Length", "Width", "Cut-out length"; results are recalculated instantly as you type.
房间面积怎么算？How is room area calculated?
矩形房间面积 = 长 × 宽。L 形房间可以看作大矩形减去缺角，或拆成两个矩形相加；不规则房间可以拆成多个矩形，用“多个矩形相加”模式。A rectangular room is length × width. An L-shaped room is the big rectangle minus the missing corner, or two rectangles added; split irregular rooms into rectangles and use the several-rectangles mode.
平方米和平方英尺怎么换算？How do square metres and square feet convert?
1 m² ≈ 10.764 ft²，1 ft² = 0.0929 m²，1 坪 ≈ 3.306 m²，1 平方码 ≈ 0.836 m²。1 m² ≈ 10.764 ft², 1 ft² = 0.0929 m², 1 ping ≈ 3.306 m² and 1 square yard ≈ 0.836 m².
买地板要多买多少？How much extra flooring should I buy?
一般多买 5–10 % 作为切割损耗；斜铺或房间形状复杂时可多到 15 %。Usually 5–10 % extra for cutting waste, up to 15 % for diagonal layouts or awkward rooms.
能举个计算实例吗？Can you show a worked example?
例如在「房间面积计算器（矩形、L 形、圆形、多个区域，米/英尺）」中填 形状 = 矩形，单位 = 米，长 = 5，宽 = 4，结果区显示：面积 m²：20；换算：20 m² = 215.2782 ft² = 23.9198 平方码 = 6.05 坪；周长：18 m；地板材料（含损耗）：20 m²For example, entering Shape = Rectangle, Unit = Metres, Length = 5, Width = 4 in the Room Size Calculator (Rectangle, L-Shape, Circle, Several Areas, Metres or Feet) gives: Area m²: 20; Conversions: 20 m² = 215.2782 ft² = 23.9198 yd² = 6.05 ping; Perimeter: 18 m; Flooring with waste: 20 m²
哪些输入会被检查？Which inputs are validated?
「房间面积计算器（矩形、L 形、圆形、多个区域，米/英尺）」会检查这些输入——「长」、「宽」、「缺角长」、「缺角宽」、「直径」：所选方式用到时必须填写，须大于 0；「层高（可选）」：须大于 0；「材料损耗 %」：可留空；绝对值超过 10¹⁵ 的数也会被拒绝。不符合时结果区显示具体提示，不会给出数字。The Room Size Calculator (Rectangle, L-Shape, Circle, Several Areas, Metres or Feet) checks its inputs — "Length", "Width", "Cut-out length", "Cut-out width", "Diameter": required when the chosen option uses it, must be greater than 0; "Ceiling height (optional)": must be greater than 0; "Material waste %": optional; numbers above 10¹⁵ in absolute value are rejected too. When a value fails, the result area names the problem instead of showing a number.
有哪些选项可以调整？What options can I adjust?
「房间面积计算器（矩形、L 形、圆形、多个区域，米/英尺）」的设置：「形状」可选 矩形、L 形、圆形、多个矩形相加（默认 矩形）；「单位」可选 米、英尺（默认 米）；「长」默认 5；「宽」默认 4；「缺角长」默认 2；「缺角宽」默认 1.5；「直径」默认 4；「层高（可选）」默认 2.6；「材料损耗 %」默认 10。每次生成结果都按当前设置处理。Settings in the Room Size Calculator (Rectangle, L-Shape, Circle, Several Areas, Metres or Feet) — "Shape": Rectangle, L-shape, Circle, Several rectangles (default Rectangle); "Unit": Metres, Feet (default Metres); "Length" default 5; "Width" default 4; "Cut-out length" default 2; "Cut-out width" default 1.5; "Diameter" default 4; "Ceiling height (optional)" default 2.6; "Material waste %" default 10. The result always uses the current settings.
手机上能用吗？Does it work on mobile?
可以。「房间面积计算器（矩形、L 形、圆形、多个区域，米/英尺）」支持触屏操作，在手机和平板浏览器中均可使用，无需安装 App。Yes. The Room Size Calculator (Rectangle, L-Shape, Circle, Several Areas, Metres or Feet) supports touch input and works in mobile and tablet browsers without installing an app.
「房间面积计算器（矩形、L 形、圆形、多个区域，米/英尺）」免费吗？需要注册吗？Is the Room Size Calculator (Rectangle, L-Shape, Circle, Several Areas, Metres or Feet) free? Do I need an account?
「房间面积计算器（矩形、L 形、圆形、多个区域，米/英尺）」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Room Size Calculator (Rectangle, L-Shape, Circle, Several Areas, Metres or Feet) is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.