rem to px

What rem to px does

Multiplies rem by root font size. Unlike px to rem this goes rem→px.

The interactive controls for rem to px load after this article so crawlers still read the instructions. Path /design/rem-to-px is the canonical address. Work happens on this device; Tool-You does not take a copy of the file or pasted text for rem to px.

How to use rem to px

1. Use rem to px for this design job (design · rem to px). px to rem is adjacent (Convert pixels to rem.) but not the same.
2. Add the file type rem to px accepts. Hint from the path: design · rem to px. Convert rem to pixels.
3. Set only the options that match rem to px. Neighbor em to px does something else (Convert em to pixels.). Tool note: Multiplies rem by root font size. Unlike px to rem this goes rem→px.
4. Run rem to px in this tab. Browser memory still applies: rem and base.
5. Download or copy the result from rem to px. If it is the wrong job, open px to rem instead.

When not to use rem to px

Skip rem to px when a neighbor tool matches better — start with px to rem or em to px — or when the description already warns the job will fail. In the tool’s own words: Multiplies rem by root font size. Unlike px to rem this goes rem→px.

Questions about rem to px

What does rem to px do that other Design pages on this site do not?

Multiplies rem by root font size. Unlike px to rem this goes rem→px. Short version: Convert rem to pixels.

Does rem to px upload my file or text to Tool-You servers?

No. rem to px runs in this browser tab. Files stay on the device. Limit note: rem and base.

Should I use px to rem instead of rem to px?

Use rem to px when you need Convert rem to pixels. Use px to rem when you need Convert pixels to rem. They share a category (Design) but not the same job.

What are the limits of rem to px?

rem and base. Also: Multiplies rem by root font size. Unlike px to rem this goes rem→px.