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CSS Units Converter

Convert px, em, rem, pt & % with configurable font-size bases.

● runs in your browser

value

from

root font-size (px) — for rem

parent font-size (px) — for em / %

pixels (px)16px

root em (rem)1rem

em1em

points (pt)12pt

percent (%)100%

Assumes 96 px = 1 inch (CSS reference). pt↔px uses 1pt = 1/72 inch.