頁面邊距計算器
輸入頁面尺寸與邊距值，即時顯示可列印區域的公釐與英吋數值。
100% client-side · no upload
Printable area
Width
—
×
Height
—
How to use
- Select a standard paper size or choose "Custom" and enter width and height.
- Enter your margin values in millimetres (top, bottom, left, right).
- The printable area updates instantly in both mm and inches.
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常見問題
- Is this tool free?
- Yes, completely free with no signup required.
- Does my data leave my device?
- No. All calculations happen in your browser — nothing is sent to a server.
- Does it work on mobile?
- Yes. The tool is mobile-first and works on any modern browser.
Last updated: By jarvisbox