🪟 百叶窗/卷帘尺寸计算器（内装/外装）Blind Size Calculator (Inside or Outside Mount)

使用说明与常见问题How-to & FAQ

「百叶窗/卷帘尺寸计算器（内装/外装）」是什么？What is the Blind Size Calculator (Inside or Outside Mount) tool?

输入窗洞上、中、下三处宽度和左、中、右三处高度，按内装或外装给出应订购的宽度和高度：内装取最窄、最短的尺寸（并可扣除厂家余量），外装在每边加覆盖量。支持厘米和英寸。本地处理。Enter the recess width at the top, middle and bottom and the height at the left, centre and right, and get the width and drop to order for an inside or outside mount: inside uses the narrowest and shortest measurement (minus any maker deduction), outside adds an overlap on each side. Works in centimetres or inches. Processed locally.

如何使用「百叶窗/卷帘尺寸计算器（内装/外装）」？How do I use the Blind Size Calculator (Inside or Outside Mount) tool?

在「百叶窗/卷帘尺寸计算器（内装/外装）」中，填写「安装方式」、「单位」、「宽度：上、中、下」、「高度：左、中、右」、「内装扣除（每边合计）」等参数，结果会随输入实时计算并显示在下方。In the Blind Size Calculator (Inside or Outside Mount): Fill in "Mount", "Units", "Width: top, middle, bottom", "Height: left, centre, right", "Inside deduction (total)"; results are recalculated instantly as you type.

为什么要量三处？Why measure in three places?

窗洞很少完全方正。内装时窗帘必须放得进最窄、最矮的地方；外装时要盖住最宽、最高的地方，所以分别取最小值和最大值。Recesses are rarely perfectly square. An inside blind must fit the narrowest and shortest point, and an outside blind must cover the widest and tallest, so the minimum and maximum are used.

内装要不要自己扣尺寸？Should I deduct for an inside mount?

多数厂家要求填写窗洞实际尺寸，由他们扣除安装余量。只有厂家要求“成品尺寸”时才自行扣除，可在“内装扣除”里填写。Most makers want the exact recess size and take off the clearance themselves. Only deduct yourself if they ask for the finished size; enter it as the inside deduction.

外装加多少合适？How much should an outside mount add?

常见做法是左右各加 4–8 cm、上下各加 5–8 cm，遮光要求高时多加一些，同时注意窗框上方是否有足够的安装位置。A common choice is 4–8 cm on each side and 5–8 cm above and below, more for blackout, while checking there is room to fix the brackets above the frame.

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

例如在「百叶窗/卷帘尺寸计算器（内装/外装）」中填 安装方式 = 内装（装在窗洞内），单位 = 厘米，宽度：上、中、下 = 100, 99.5, 100.2，高度：左、中、右 = 140, 140.5, 139.8，结果区显示：订购宽度：99.5 cm；订购高度：139.8 cm；ℹ 内装取最窄宽度和最短高度。很多厂家会自动扣除约 0.5–1 cm，订购前请确认，避免重复扣除。；⚠ 窗洞不方正：宽度相差 0.7 cm，高度相差 0.7 cm，内装可能留缝，可考虑外装。For example, entering Mount = Inside the recess, Units = cm, Width: top, middle, bottom = 100, 99.5, 100.2, Height: left, centre, right = 140, 140.5, 139.8 in the Blind Size Calculator (Inside or Outside Mount) gives: Order width: 99.5 cm; Order drop: 139.8 cm; ℹ Inside mounts use the narrowest width and shortest height. Many makers deduct about 0.5–1 cm themselves, so check first to avoid deducting twice.; ⚠ The recess is out of square: widths differ by 0.7 cm and heights…

哪些输入会被检查？Which inputs are validated?

「百叶窗/卷帘尺寸计算器（内装/外装）」会检查这些输入——「内装扣除（每边合计）」、「外装每边覆盖量」、「外装上下各加」：不能为负数；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 Blind Size Calculator (Inside or Outside Mount) checks its inputs — "Inside deduction (total)", "Outside overlap per side", "Outside overlap at top and at bottom (each)": cannot be negative; 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?

「百叶窗/卷帘尺寸计算器（内装/外装）」的设置：「安装方式」可选 内装（装在窗洞内）、外装（盖住窗洞）（默认 内装（装在窗洞内））；「单位」可选 厘米、英寸（默认 厘米）；「宽度：上、中、下」默认 100, 99.5, 100.2；「高度：左、中、右」默认 140, 140.5, 139.8；「内装扣除（每边合计）」默认 0；「外装每边覆盖量」默认 5；「外装上下各加」默认 5。每次生成结果都按当前设置处理。Settings in the Blind Size Calculator (Inside or Outside Mount) — "Mount": Inside the recess, Outside the recess (default Inside the recess); "Units": cm, in (default cm); "Width: top, middle, bottom" default 100, 99.5, 100.2; "Height: left, centre, right" default 140, 140.5, 139.8; "Inside deduction (total)" default 0; "Outside overlap per side" default 5; "Outside overlap at top and at bottom (each)" default 5. The result always uses the current settings.

手机上能用吗？Does it work on mobile?

可以。「百叶窗/卷帘尺寸计算器（内装/外装）」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 Blind Size Calculator (Inside or Outside Mount) supports touch input and works in mobile and tablet browsers without installing an app.

「百叶窗/卷帘尺寸计算器（内装/外装）」免费吗？需要注册吗？Is the Blind Size Calculator (Inside or Outside Mount) free? Do I need an account?

「百叶窗/卷帘尺寸计算器（内装/外装）」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 Blind Size Calculator (Inside or Outside Mount) is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.