REM stands for 'root em'. It's a CSS unit relative to the root element's font size. If the root is 16px, then 1rem = 16px.

What base size should I use?

The default browser font size is 16px, which is the most common base. Change the base if your project uses a different root font size.

PX to REM Converter

Convert pixels to REM and REM to pixels. With reference table and custom base size.

How to use: Enter a pixel value and base font size to get the rem equivalent.

Base font size:

Pixels (px)

REM

Pixels	REM
2px	0.125rem
4px	0.25rem
6px	0.375rem
8px	0.5rem
10px	0.625rem
12px	0.75rem
14px	0.875rem
16px	1rem
18px	1.125rem
20px	1.25rem
24px	1.5rem
28px	1.75rem
32px	2rem
36px	2.25rem
40px	2.5rem
48px	3rem
56px	3.5rem
64px	4rem
72px	4.5rem
80px	5rem
96px	6rem

PX to REM Converter

Convert between pixels and REM units for responsive CSS. Set your base font size, enter a value, and see the conversion instantly. Includes a reference table with common pixel sizes and their REM equivalents.

Frequently Asked Questions

What is a REM unit?: REM stands for 'root em'. It's a CSS unit relative to the root element's font size. If the root is 16px, then 1rem = 16px.
What base size should I use?: The default browser font size is 16px, which is the most common base. Change the base if your project uses a different root font size.