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CSS units

rem to px Converter

Convert rem (rem) to pixels (px). 1 rem = 16 px, and 1 px = 0.0625 rem.

Formula

px = rem × 16

How to convert

To convert rem to pixels, multiply the value by 16. For example, 2 rem = 32 px.

Conversion table

rem px
0.25 rem 4 px
0.5 rem 8 px
0.75 rem 12 px
0.875 rem 14 px
1 rem 16 px
1.25 rem 20 px
1.5 rem 24 px
2 rem 32 px
2.5 rem 40 px
3 rem 48 px
4 rem 64 px

The table assumes a base font size of 16px. Change the settings in the converter above to match your project.

About these units

Browsers turn every CSS length into pixels. rem is relative to the root font size and em to the parent element's font size; both are 16px in every major browser unless the page or the user changes it. 1pt is 1/72 inch and 1px is 1/96 inch, so 1pt = 1.333px. vw is 1% of the viewport width, so its pixel size depends on the screen.

FAQ

› How do I convert rem to px?

1 rem = 16 px. To convert, multiply the value by 16: 2 rem = 32 px.

› What is 1 px in rem?

1 px = 0.0625 rem. The reverse formula is rem = px ÷ 16.

› Why use rem instead of px?

rem sizes follow the user's browser font size setting, which helps accessibility, and changing one root value resizes the whole layout consistently.

› What is the difference between rem and em?

rem always uses the root (html) font size. em uses the font size of the element's parent, so nested em values compound.