🖥️ CSS & Design
rem to px (16px base) Converter
Convert rem to px (16px base) instantly with a reference conversion table.
Quick answer: To convert rem to px (16px base), multiply by 16. For example, 1 rem = 16 px (16px base). Use the calculator below for any value.
rem to px (16px base)
→
Common conversions
| rem | px (16px base) |
|---|
Formula:
How to convert rem to px (16px base)
1
Enter your value
Type the number of rem you want to convert into the left box. The result in px (16px base) 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 — px (16px base) to rem. Your current value carries across so you don't have to re-enter anything.
3
About rem and px (16px base)
rem and px (16px base) are common css measurements.
💡 Did you know?
1 rem = the root HTML element's font size (16px by browser default). The 'rem' unit was added to CSS3 specifically because em compounded too easily — 1.5em inside 1.5em inside 1.5em is 3.375× the original size. rem always references the root.
📊 Common conversions at a glance
| rem | px (16px base) |
|---|---|
| 0.125 | 2 |
| 0.25 | 4 |
| 0.5 | 8 |
| 0.75 | 12 |
| 1 | 16 |
| 1.25 | 20 |
Reviewed for 2026. rem ↔ px (16px base) 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.