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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All processing is done locally in your browser. No data is uploaded.
How to Use
- Paste any valid JSON, supports nesting, arrays and escapes
- Click Beautify to auto indent and format
- Click Minify to remove whitespace into one line
- All operations run locally for privacy
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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.