48px to rem
48px = 3rem
At the browser default root font size of 16 px. Change it and this number changes — see below.
How it is calculated
One px is 0.0625rem, so:
48px × 0.0625 = 3remReversing it, 3rem × 16 returns 48px.
48px at other root font sizes
rem is measured against the root element, so the answer above holds only while that is 16 px. A visitor who has raised their browser's default — the accessibility setting rem exists to respect — is reading your page at one of the larger rows.
| Root font size | 48px equals |
|---|---|
| 14 px | 3.4286rem |
| 16 px (default) | 3rem |
| 18 px | 2.6667rem |
| 20 px | 2.4rem |
| 24 px | 2rem |
Nearby values
| px | rem |
|---|---|
| 24px | 1.5rem |
| 28px | 1.75rem |
| 32px | 2rem |
| 36px | 2.25rem |
| 40px | 2.5rem |
| 48px | 3rem |
| 56px | 3.5rem |
| 64px | 4rem |
| 72px | 4.5rem |
Frequently asked questions
What is 48px in rem?
3rem at the default 16 px root font size.
How is 48px converted to rem?
Multiply by 0.0625: 48 × 0.0625 = 3. To go back, multiply 3 by 16.
Is 3rem always the answer?
No. rem is relative to the root element, so 48px is 3rem only while that is 16 px. The table above gives the value at the sizes you are most likely to meet.