Quick converter
Type into any field — every unit in this category updates instantly.
Root font-size 16px
Common rem → % values
Click any row to open its dedicated page.
| rem | % |
|---|---|
| 4rem | 400% |
| 6rem | 600% |
| 8rem | 800% |
| 10rem | 1000% |
| 12rem | 1200% |
| 14rem | 1400% |
| 16rem | 1600% |
| 18rem | 1800% |
| 20rem | 2000% |
| 24rem | 2400% |
| 28rem | 2800% |
| 32rem | 3200% |
| 36rem | 3600% |
| 40rem | 4000% |
| 44rem | 4400% |
| 48rem | 4800% |
| 56rem | 5600% |
| 64rem | 6400% |
| 72rem | 7200% |
| 80rem | 8000% |
| 96rem | 9600% |
| 112rem | 11200% |
| 128rem | 12800% |
| 144rem | 14400% |
| 160rem | 16000% |
| 192rem | 19200% |
| 224rem | 22400% |
| 256rem | 25600% |
Convert 224rem 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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