🖥️ CSS & Design
rem to em (when 1em=16px) Converter
Convert rem to em (when 1em=16px) instantly with a reference conversion table.
rem to em (when 1em=16px)
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Common conversions
| rem | em (when 1em=16px) |
|---|
Formula:
How to convert rem to em (when 1em=16px)
1
Enter your value
Type the number of rem you want to convert into the left box. The result in em (when 1em=16px) appears instantly in the right box. You can also type into the right box to convert in the other direction.
2
Use the swap button
Click the ⇄ Swap button to reverse the conversion — em (when 1em=16px) to rem. Your current value carries across so you don't have to re-enter anything.
3
About rem and em (when 1em=16px)
rem and em (when 1em=16px) are common css measurements.
Reviewed for 2026. rem ↔ em (when 1em=16px) conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.