CSS Unit Converter
Convert between pixels (px), rem, and em units. Enter a value in any field to see the conversions.
Pixels
Fixed size unit. 1px = 1 pixel on screen.
Root EM
Relative to root font size (16px). Great for consistent scaling.
Element EM
Relative to parent font size (16px). Cascades with parent.
About CSS Units
px
PixelsAbsolute unit. Always the same size regardless of parent elements. Good for precise control and borders.
rem
Root EMRelative to root element. Consistent scaling across the entire page. Best for typography and spacing.
em
Element EMRelative to parent element. Cascades with nested elements. Good for component-based scaling.
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