PX to REM Conversion

4px=0.25rem

rem = px ÷ 16

How this conversion works

Most browsers use a default root font size of 16px. To convert 4px to rem, divide by 16: 4 ÷ 16 = 0.25rem. Using rem units makes your layouts scale proportionally when users change their browser font size.

PX to REM Quick Reference

InputResult
1px0.0625rem
2px0.125rem
4px0.25rem
8px0.5rem
10px0.625rem
12px0.75rem
14px0.875rem
16px1rem
18px1.125rem
20px1.25rem
24px1.5rem
32px2rem
48px3rem
64px4rem
100px6.25rem
Open PX ↔ REM Converter

More PX to REM Conversions

1px → 0.0625rem2px → 0.125rem8px → 0.5rem10px → 0.625rem12px → 0.75rem14px → 0.875rem16px → 1rem18px → 1.125rem20px → 1.25rem24px → 1.5rem32px → 2rem48px → 3rem64px → 4rem100px → 6.25rem

REM to PX Conversions

0.25rem → 4px0.5rem → 8px0.75rem → 12px1rem → 16px1.25rem → 20px1.5rem → 24px2rem → 32px3rem → 48px4rem → 64px

Temperature Conversions

0°C → 32°F32°F → 0°C100°C → 212°F212°F → 100°C0°F → -17.7778°C98.6°F → 37°C37°C → 98.6°F72°F → 22.2222°C350°F → 176.6667°C180°C → 356°F200°C → 392°F375°F → 190.5556°C425°F → 218.3333°C450°F → 232.2222°C