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ToolzHive

CSS Unit Converter

Convert between px, rem, em, pt, % and viewport units.

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Conversions — click a value to copy

100% private

Runs in your browser. Nothing is uploaded.

Instant results

No waiting, no queues, no page reloads.

Free & unlimited

No sign-up and no usage caps.

How to use the CSS Unit Converter

Convert between px, rem, em, pt, % and viewport units. It is one of 17 free css tools on ToolzHive.

  1. 1 Use the controls to design the effect and see it change live in the preview.
  2. 2 Fine-tune values until the preview looks exactly right.
  3. 3 Copy the generated CSS and paste it into your stylesheet.

Frequently asked questions

Is the CSS Unit Converter free to use?

Yes. The CSS Unit Converter is completely free, with no sign-up, no usage limits and no watermarks.

Is my data safe?

Yes. The tool runs entirely in your web browser, so the text and files you use are processed on your own device and are never uploaded to or stored on our servers.

Does it work on phones and tablets?

Yes. CSS Unit Converter works in any modern browser on desktop, Android and iOS, with no app to install.

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