🪑 书桌高度计算器（坐姿、站姿、椅子与显示器）Desk Height Calculator (Sitting, Standing, Chair & Monitor)

使用说明与常见问题How-to & FAQ

「书桌高度计算器（坐姿、站姿、椅子与显示器）」是什么？What is the Desk Height Calculator (Sitting, Standing, Chair & Monitor) tool?

按身高粗略估算坐姿书桌（键盘）高度、站立书桌高度、椅面高度和显示器顶部高度，支持 cm 和英寸。按平均人体比例估算，实际以坐下后手肘约成 90° 为准微调。本地处理。Estimate the sitting desk (keyboard) height, standing desk height, chair seat height and monitor top height from your height, in cm or inches. Based on average body proportions; fine-tune so your elbows rest at about 90°. Processed locally.

如何使用「书桌高度计算器（坐姿、站姿、椅子与显示器）」？How do I use the Desk Height Calculator (Sitting, Standing, Chair & Monitor) tool?

在「书桌高度计算器（坐姿、站姿、椅子与显示器）」中，填写「身高」、「单位」等参数，结果会随输入实时计算并显示在下方。In the Desk Height Calculator (Sitting, Standing, Chair & Monitor): Fill in "Body height", "Unit"; results are recalculated instantly as you type.

怎么判断高度合适？How do I know the height is right?

坐直、肩膀放松、上臂自然下垂，手肘弯成约 90°，前臂和桌面（或键盘）平行；双脚平放在地上，大腿大致水平。显示器顶部和眼睛差不多高或略低，距离约一臂。Sit upright with relaxed shoulders and your upper arms hanging naturally, elbows bent at about 90° and forearms level with the desk or keyboard; feet flat on the floor and thighs roughly level. The top of the monitor should be at or slightly below eye level, about an arm's length away.

标准书桌高度是多少？What is a standard desk height?

常见的固定书桌高度约 72–76 cm（28–30 英寸），适合身高约 175–185 cm 的人。个子较矮时可以升高椅子并加脚踏，或选可调节桌。Fixed desks are usually 72–76 cm (28–30 in), which suits people about 175–185 cm tall. If you are shorter, raise the chair and add a footrest, or use an adjustable desk.

结果是怎么估的？How are these estimated?

按平均人体比例：坐姿肘高约为身高的 41%，椅面（腘窝高度）约 25%，坐姿眼高约 70%，站姿肘下桌面约 62%，站姿眼高约 93.5%。每个人的比例不同，只是起点，需要按实际感觉调整。From average body proportions: sitting elbow height is about 41% of body height, the seat (knee-crease height) about 25%, sitting eye height about 70%, a standing desk just below the elbow about 62% and standing eye height about 93.5%. Everyone differs, so treat them as a starting point and adjust.

能举个计算实例吗？Can you show a worked example?

例如在「书桌高度计算器（坐姿、站姿、椅子与显示器）」中填 身高 = 170，单位 = 厘米 cm，结果区显示：坐姿书桌 / 键盘面高度：70 cm；椅面高度：43 cm；坐姿显示器顶部（约眼睛高度）：119 cm；站立书桌高度：105 cm；站姿显示器顶部：159 cm；ℹ 按平均人体比例估算（含鞋约 2–3 cm）；腿长、臂长和椅子不同，结果会差几厘米For example, entering Body height = 170, Unit = Centimetres in the Desk Height Calculator (Sitting, Standing, Chair & Monitor) gives: Sitting desk / keyboard height: 70 cm; Chair seat height: 43 cm; Monitor top when sitting (about eye level): 119 cm; Standing desk height: 105 cm; Monitor top when standing: 159 cm; ℹ estimated from average body proportions, including about 2–3 cm of shoe…

哪些输入会被检查？Which inputs are validated?

「书桌高度计算器（坐姿、站姿、椅子与显示器）」会检查这些输入——「身高」：必须填写，须大于 0；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 Desk Height Calculator (Sitting, Standing, Chair & Monitor) checks its inputs — "Body height": required, must be greater than 0; 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?

「书桌高度计算器（坐姿、站姿、椅子与显示器）」的设置：「身高」默认 170；「单位」可选 厘米 cm、英寸 in（默认 厘米 cm）。每次生成结果都按当前设置处理。Settings in the Desk Height Calculator (Sitting, Standing, Chair & Monitor) — "Body height" default 170; "Unit": Centimetres, Inches (default Centimetres). The result always uses the current settings.

手机上能用吗？Does it work on mobile?

可以。「书桌高度计算器（坐姿、站姿、椅子与显示器）」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 Desk Height Calculator (Sitting, Standing, Chair & Monitor) supports touch input and works in mobile and tablet browsers without installing an app.

「书桌高度计算器（坐姿、站姿、椅子与显示器）」免费吗？需要注册吗？Is the Desk Height Calculator (Sitting, Standing, Chair & Monitor) free? Do I need an account?

「书桌高度计算器（坐姿、站姿、椅子与显示器）」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 Desk Height Calculator (Sitting, Standing, Chair & Monitor) is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.