REM to PX Converter

Convert REM to pixels for any root font size. With the browser default of 16 px, 1 rem = 16 px.

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The base font size is pixels.
Rounding precision (max 15):

Popular REM Values in Pixels

With a 16 px root: 0.25rem = 4px, 0.5rem = 8px, 0.75rem = 12px, 1rem = 16px, 1.25rem = 20px, 1.5rem = 24px, 2rem = 32px, 2.5rem = 40px, 3rem = 48px.

REM to PX Conversion Table

Pixels for common rem values with the default 16 px root and with a 10 px root (the "62.5%" setup).

REM Pixels (16px root) Pixels (10px root)
0.125rem2px1.25px
0.25rem4px2.5px
0.375rem6px3.75px
0.5rem8px5px
0.625rem10px6.25px
0.75rem12px7.5px
0.875rem14px8.75px
1rem16px10px
1.125rem18px11.25px
1.25rem20px12.5px
1.375rem22px13.75px
1.5rem24px15px
1.75rem28px17.5px
2rem32px20px
2.25rem36px22.5px
2.5rem40px25px
2.75rem44px27.5px
3rem48px30px
3.5rem56px35px
4rem64px40px
4.5rem72px45px
5rem80px50px
6rem96px60px
8rem128px80px
10rem160px100px

How REM Changes with the Browser Font Size

Browsers such as Chrome let readers pick a default font size. REM follows that choice, which is why it is the accessible unit for text.

Browser font size Root size 1rem 1.5rem 2rem
Very small9px9px13.5px18px
Small12px12px18px24px
Medium (default)16px16px24px32px
Large20px20px30px40px
Very large24px24px36px48px

Page zoom (Ctrl + / Ctrl −) scales everything, px included. The font-size setting above only scales rem and em.

How to Convert REM to PX

px = rem × root font size

Example: 1.25 rem × 16 = 20 px. If your stylesheet sets html { font-size: 62.5%; }, the root is 10 px and 1.25 rem = 12.5 px.

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Frequently Asked Questions (FAQs)

How many pixels is 1 rem?

1 rem = 16 px with the browser default root font size. It equals whatever font size the html element has.

What is 1.5rem in px?

1.5 rem = 24 px with a 16 px root.

What is 2.5rem in px?

2.5 rem = 40 px with a 16 px root, or 25 px with a 10 px root.

Is 1 rem always 16px?

No. 16 px is only the default. If the reader changes their browser font size, or your CSS changes the html font size, 1 rem changes with it.

Does EachConvert store my data?

No. All conversions happen entirely in your browser. The values you enter are never sent to our server or saved.