CSS Unit Converter
ConvertersConvert between CSS units: px, rem, em, percent, vw, vh. Set a custom base font size for accurate rem/em calculations.
How to Use CSS Unit Converter
- 1Enter or paste your data into the input fields above.
- 2Adjust any settings or options as needed for your specific use case.
- 3View the results instantly — all processing happens in your browser.
- 4Copy the output or download your results using the provided buttons.
Tips & Best Practices
100% Private
Your data never leaves your browser. We don't store, track, or transmit any of your information to our servers.
Works Offline
Once loaded, most tools continue working even without an internet connection.
Keyboard Shortcuts
Use Ctrl+C to copy results and Ctrl+V to paste data quickly into any tool.
Mobile Friendly
All tools are fully responsive and work perfectly on phones, tablets, and desktops.
Frequently Asked Questions
Is this tool free to use?
Yes, all tools on PuddleTools are completely free. No signup, no credit card, no limits.
Is my data secure?
Absolutely. All processing happens locally in your browser. Your files and data never touch our servers.
Can I use this commercially?
Yes, you can use all tools for both personal and commercial projects without any attribution required.