REM to PX Converter
Convert REM units to pixels for CSS development. Set your root font size and instantly convert between rem and px. Free browser tool.
Common Sizes (base 16px)
| REM | PX | Typical Use |
|---|---|---|
| 0.625rem | 10px | Extra small text |
| 0.75rem | 12px | Caption / label |
| 0.875rem | 14px | Small body text |
| 1rem | 16px | Base / body text |
| 1.125rem | 18px | Large body text |
| 1.5rem | 24px | Heading h3 |
| 2rem | 32px | Heading h2 |
| 3rem | 48px | Heading h1 |
How to Use
- 1 Set the base font size (default 16px, which is the browser default)
- 2 Select REM → PX to convert rem to pixels, or PX → REM for the reverse
- 3 Enter your rem or pixel value
- 4 Click Convert to see the result
Use Cases
Convert REM values from CSS to pixel dimensions when communicating measurements with designers using pixel-based tools.
Quickly calculate the computed pixel size of a REM-based CSS value during browser debugging sessions.
Verify that REM-based styles produce the expected pixel dimensions at a given base font size.
FAQ
Multiply the REM value by the root font size (usually 16px). For example, 1.5rem × 16 = 24px.
Use the font-size value set on your html element. If you haven't set one, browsers default to 16px.
Yes. Enter your project's root font-size in the Base Font Size field before converting.
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