Quick converter
Type into any field — every unit in this category updates instantly.
Root font-size 16px
Common em → % values
Click any row to open its dedicated page.
| em | % |
|---|---|
| 4em | 400% |
| 6em | 600% |
| 8em | 800% |
| 10em | 1000% |
| 12em | 1200% |
| 14em | 1400% |
| 16em | 1600% |
| 18em | 1800% |
| 20em | 2000% |
| 24em | 2400% |
| 28em | 2800% |
| 32em | 3200% |
| 36em | 3600% |
| 40em | 4000% |
| 44em | 4400% |
| 48em | 4800% |
| 56em | 5600% |
| 64em | 6400% |
| 72em | 7200% |
| 80em | 8000% |
| 96em | 9600% |
| 112em | 11200% |
| 128em | 12800% |
| 144em | 14400% |
| 160em | 16000% |
| 192em | 19200% |
| 224em | 22400% |
| 256em | 25600% |
Convert 72em to other units
Formula
rem = px ÷ root-font-size and px = rem × root-font-size. Browsers default the root font-size to 16px, so 1rem normally equals 16px unless the page (or the user's browser settings) changes it.
em works the same way, but relative to the parent element's font-size rather than the root — the numbers only match rem when nothing in the ancestor chain has resized the font.
pt is a print unit: 1pt = 1.333px, based on the fixed 96px-per-inch / 72pt-per-inch relationship browsers use.
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