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CSS Unit Converter - PX REM EM VW VH

Convert pixels into rem, em, vw, and vh values using custom root font size and viewport dimensions.

CSS sizing

CSS Unit Converter

Convert pixels into rem, em, vw, and vh values using your chosen root font size and viewport.

Pixels
Root font size
Viewport width
Viewport height
rem1remem1emvw1.1111vwvh1.7778vh
font-size: 1rem;
width: 1.1111vw;
height: 1.7778vh;

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How the css unit converter works

Paste or enter the code, data, or value you want to inspect.

The tool processes it locally in your browser.

Copy the formatted output or converted value for your project.

Frequently Asked Questions

Is the css unit converter free?

Yes. It is free and does not require an account.

Is my code sent to a server?

No. These developer tools run locally in your browser.

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