CSS Unit Converter

Convert between px, rem, em, pt, vw, and vh with configurable base font size and viewport.

css

Value

From

Base font size (px)

Viewport width (px)

Viewport height (px)

pxPixels

16px

remRoot em (relative to html font-size)

1rem

emEm (relative to parent font-size)

1em

ptPoints (1pt = 1.333px)

12pt

vwViewport width %

0.8333vw

vhViewport height %

1.4815vh

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