CSS Unit Converter
Instantly convert between px, rem, em, vw, vh, %, pt and cm with a custom root font size.
💡 Click any row to copy the value
About CSS Unit Converter
What is CSS Unit Converter?
This tool is part of RapidTools, a free online platform with 100+ browser-based utilities for developers, designers, and creators. All tools run 100% in your browser with no server-side processing.
How to Use
- 1Use the controls above to configure the tool.
- 2Your results are generated instantly.
- 3Copy your output using the copy button.
Frequently Asked Questions
Is this tool free to use?
Yes, all tools on RapidTools are 100% free with no hidden charges or premium subscriptions.
Do I need to create an account?
No. You can use all our tools instantly without signing up or providing any personal information.
Is my data secure?
Absolutely. All processing happens locally in your browser. Your data is never uploaded to our servers.
100% Private — Your Data Never Leaves Your Browser
All processing happens locally in your browser using JavaScript. No data is ever sent to our servers.