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Enter a value and select units to convert. Adjust advanced settings for 'em', 'rem', 'vw', 'vh', and '%' calculations.
| From | To | Formula |
|---|---|---|
| px | rem | px ÷ rootFontSize |
| px | em | px ÷ parentFontSize |
| px | vw | (px ÷ viewportWidth) × 100 |
| px | vh | (px ÷ viewportHeight) × 100 |
| px | % | (px ÷ parentFontSize) × 100 |
px (Pixels): Pixels; an absolute unit relative to the viewing device.
em: Relative to the font-size of the parent element.
rem: Relative to the font-size of the root (html) element.
vw/vh: 1% of the viewport width.
%: Relative to the parent element's value for the same property (e.g., font-size of parent for font-size conversion).
pt (Points): Points; an absolute unit (1pt = 1/72 of an inch).
in, cm, mm: Inches; an absolute unit (1in = 96px)., Centimeters; an absolute unit (1cm ≈ 37.8px)., Millimeters; an absolute unit (1mm = 1/10th of a centimeter).