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🪟 窗帘尺寸计算器Curtain Size Calculator
按窗户宽高、窗帘杆超出窗框的长度、褶皱倍数和下摆位置，算出窗帘总宽度、每片宽度和长度，并给出最接近的常见成品长度。Work out curtain width per panel and length from the window size, how far the rod extends past the frame, the fullness and where the hem should fall — with the nearest common ready-made length.
使用说明与常见问题How-to & FAQ
「窗帘尺寸计算器」是什么？What is the Curtain Size Calculator tool?
按窗户宽高、窗帘杆超出窗框的长度、褶皱倍数和下摆位置，算出窗帘总宽度、每片宽度和长度，并给出最接近的常见成品长度。Work out curtain width per panel and length from the window size, how far the rod extends past the frame, the fullness and where the hem should fall — with the nearest common ready-made length.
如何使用「窗帘尺寸计算器」？How do I use the Curtain Size Calculator tool?
在「窗帘尺寸计算器」中，填写「单位」、「窗户宽度（含窗框）」、「窗户高度（含窗框）」、「窗帘杆每侧超出窗框」、「窗帘杆在窗框上方」等参数，结果会随输入实时计算并显示在下方。In the Curtain Size Calculator: Fill in "Units", "Window width (including trim)", "Window height (including trim)", "Rod extension past the frame, each side", "Rod height above the frame"; results are recalculated instantly as you type.
窗帘要做多宽？How wide should curtains be?
总宽度 = 杆的可用长度（窗宽 + 两侧超出部分）× 褶皱倍数。标准 2 倍会有自然的褶皱；轻薄平整的效果用 1.5 倍，纱帘常用 2.5–3 倍。再除以片数就是每片宽度。Total width = rod width (window + both extensions) × fullness. 2× gives natural folds; 1.5× looks flat, and sheers often use 2.5–3×. Divide by the number of panels for the width of each.
常见成品长度有哪些？What are common ready-made lengths?
美国市面常见成品窗帘长度为 63、84、95、108 和 120 英寸，本工具给出不短于所需长度的最近一个。公制模式不给建议，因为各地规格不同。Common US ready-made lengths are 63, 84, 95, 108 and 120 in; the tool suggests the nearest one that is not shorter than you need. Metric mode gives no suggestion because sizes vary by country.
「窗帘尺寸计算器」免费吗？需要注册吗？Is the Curtain Size Calculator free? Do I need an account?
「窗帘尺寸计算器」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 Curtain Size 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.