PX to REM, EM & VW Converter

Convert design mockup pixel measurements into responsive, accessible CSS units.

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Pixels
16px
REM
1rem
EM
1em
Viewport Width
0.8333vw

How it works

Step 01

Enter Value

Type the number and select your source unit (px, rem, em, vw).

Step 02

Configure Base

Adjust the root base font size if your project uses non-16px.

Step 03

Copy Unit

Copy the calculated REM or PX value.

Frequently Asked Questions

REM units respect user browser accessibility zoom and text sizing preferences, making websites more accessible.