Convert px to em Online
Get the em value for any pixel measurement, useful for component-relative sizing and media query breakpoints that scale with the user's font size. Set the reference font size and the result updates instantly.
CSS Units Converter
Convert between px, rem, em, vw, vh, %, pt, cm, mm, in and other CSS units
All Conversions
Conversion Formulas
Quick Reference (root: 16px, parent: 16px)
| px | rem | em | pt | vw | vh | Note |
|---|---|---|---|---|---|---|
| 1 | 0.0625 | 0.0625 | 0.75 | 0.052083 | 0.092593 | Hairline |
| 4 | 0.25 | 0.25 | 3 | 0.208333 | 0.37037 | 0.25rem |
| 8 | 0.5 | 0.5 | 6 | 0.416667 | 0.740741 | 0.5rem |
| 10 | 0.625 | 0.625 | 7.5 | 0.520833 | 0.925926 | Small text |
| 12 | 0.75 | 0.75 | 9 | 0.625 | 1.111111 | 0.75rem |
| 14 | 0.875 | 0.875 | 10.5 | 0.729167 | 1.296296 | Body small |
| 16 | 1 | 1 | 12 | 0.833333 | 1.481481 | 1rem (base) |
| 18 | 1.125 | 1.125 | 13.5 | 0.9375 | 1.666667 | 1.125rem |
| 20 | 1.25 | 1.25 | 15 | 1.041667 | 1.851852 | 1.25rem |
| 24 | 1.5 | 1.5 | 18 | 1.25 | 2.222222 | 1.5rem / heading |
| 32 | 2 | 2 | 24 | 1.666667 | 2.962963 | 2rem |
| 48 | 3 | 3 | 36 | 2.5 | 4.444444 | 3rem |
| 64 | 4 | 4 | 48 | 3.333333 | 5.925926 | 4rem |
| 96 | 6 | 6 | 72 | 5 | 8.888889 | 6rem / 1in |
Quick Start
- 1Enter your pixel value
- 2Set the reference font size the em is relative to
- 3Read the em result for the element or breakpoint
- 4Copy the em value into your stylesheet
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Looking for FAQs and advanced options? Visit the full CSS Units Converter page →