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🪜 楼梯计算器Stair Calculator
根据总高度、最大踏步高和踏面宽度计算台阶数、实际踢面高、总水平长度、斜梁长度和坡度角。Work out the number of steps, actual riser height, total run, stringer length and angle from the total rise.
使用说明与常见问题How-to & FAQ
「楼梯计算器」是什么？What is the Stair Calculator tool?
根据总高度、最大踏步高和踏面宽度计算台阶数、实际踢面高、总水平长度、斜梁长度和坡度角。Work out the number of steps, actual riser height, total run, stringer length and angle from the total rise.
如何使用「楼梯计算器」？How do I use the Stair Calculator tool?
在「楼梯计算器」中，填写「单位」、「总高度」、「最大踢面高」、「踏面深度」等参数，结果会随输入实时计算并显示在下方。In the Stair Calculator: Fill in "Unit", "Total rise", "Max riser height", "Tread depth"; results are recalculated instantly as you type.
什么是 2R+T 规则？What is the 2R + T rule?
两倍踢面高加一个踏面深约等于人的一步时走起来最舒适；本工具按 24–25.5 英寸（约 61–64.8 厘米）判断，英寸和厘米模式使用同一标准。Two risers plus one tread should be about one stride for comfortable stairs; the tool uses 24–25.5 in (about 61–64.8 cm) in both inch and centimeter mode.
结果符合建筑规范吗？Does this meet building code?
本工具只做几何计算。规范因地区而异（如美国 IRC 要求踢面 ≤ 7¾ 英寸、踏面 ≥ 10 英寸），施工前请以当地规范为准。This tool only does the geometry. Codes vary (e.g. the US IRC requires risers ≤ 7¾ in and treads ≥ 10 in); check your local code before building.
「楼梯计算器」免费吗？需要注册吗？Is the Stair Calculator free? Do I need an account?
「楼梯计算器」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 Stair Calculator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.