px → rem · Typography & CSS

Typography & CSS Unit Converter

Convert between CSS and print typography units: pixels, points, picas, inches, centimeters, millimeters, em, rem and percent at 96 DPI.

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About Typography & CSS conversion

Designers and developers constantly switch between absolute and relative units. One design may spec 16px, another 12pt, and CSS may need the same size in rem or em. This converter uses the standard CSS reference of 96 pixels per inch (1in = 96px = 72pt = 6pc) and a default 16px root font size for relative units.

Supported units include pixels (px), points (pt), picas (pc), inches (in), centimeters (cm), millimeters (mm), em, rem (both 16px base), and percent where 100% equals 16px. Adjust the base if your project uses a different root size by scaling the em/rem result accordingly.

Units supported: Pixels, points, picas, inches, centimeters, millimeters, em (16px), rem (16px), percent (100% = 16px) at 96 DPI.

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Frequently asked questions

What units can I convert with the Typography & CSS converter?

Pixels, points, picas, inches, centimeters, millimeters, em (16px), rem (16px), percent (100% = 16px) at 96 DPI.

How accurate is this typography / CSS size converter?

This converter uses standard international definitions for every typography / CSS size unit, so results are precise to several decimal places, accurate enough for cooking, travel, homework, or any everyday use.

Can I convert in both directions?

Yes, enter a value in either field and the other updates instantly. You can also tap the swap button to flip the two units, or use the copy-link button to share this exact conversion.