Quick converter
Type into any field — every unit in this category updates instantly.
Root font-size 16px
Common rem → em values
Click any row to open its dedicated page.
| rem | em |
|---|---|
| 4rem | 4em |
| 6rem | 6em |
| 8rem | 8em |
| 10rem | 10em |
| 12rem | 12em |
| 14rem | 14em |
| 16rem | 16em |
| 18rem | 18em |
| 20rem | 20em |
| 24rem | 24em |
| 28rem | 28em |
| 32rem | 32em |
| 36rem | 36em |
| 40rem | 40em |
| 44rem | 44em |
| 48rem | 48em |
| 56rem | 56em |
| 64rem | 64em |
| 72rem | 72em |
| 80rem | 80em |
| 96rem | 96em |
| 112rem | 112em |
| 128rem | 128em |
| 144rem | 144em |
| 160rem | 160em |
| 192rem | 192em |
| 224rem | 224em |
| 256rem | 256em |
Convert 24rem 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.
Use it in code
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