REM to PX Converter
rem转pxCSS单位响应式前端开发
Two-way conversion between rem and px based on a customizable root font size (default 16px), plus em/pt/% support — essential for responsive development and design handoff, fully local.
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How to Use
- Enter a rem or px value
- Auto-converts using the root font size
- Bidirectional input with batch conversion
- Conversions use standard factors computed locally — works offline too
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FAQ
Why is the default root size 16px?
Browsers default html font-size to 16px so 1rem=16px unless overridden; change it in the input if your project differs.
rem vs em?
rem scales from the root element for global consistency; em scales from the parent and compounds through nesting.
Will my data be uploaded?
No, all conversions run locally in your browser.