PX and REM Conversion Tool Description
Unit Introduction
PX (pixels) Absolute unit, fixed size not affected by the parent element; REM (root relative unit) Based on the HTML root element of the font size dynamic calculation, suitable for responsive layout development. Core Functions
• Intelligent conversion： Input PX or REM value, automatically convert the result in both directions. Customisable base value： Default calculation based on 16px (the browser's regular root size), support for modification. Batch processing： Multiple values can be entered consecutively for efficient conversion. Scenarios
- Convert the PX size of a design to REM for multiple devices - Check the actual pixel value of an existing REM layout - Quickly adjust the base scale during responsive development Technical Principle
Conversion formula: REM value = PX value / Root font size For example, if the root font is 16px, 32px = 2rem. Cautions
1. mobile development is recommended to set a reasonable root font size (such as through the media query to adjust) 2. conversion is recommended to use the CSS preprocessor or PostCSS plug-ins to achieve automation 3. the calculation results retained 4 decimals to ensure accuracy