CSS Unit Converter
Instant results, no download required
Convert between px, rem, em, pt, vw and vh units.
100% Private
Files are processed locally in your browser and never uploaded to a server.
Instant Results
No queues, no waiting — get your output the moment you click.
No Signup
Free to use with no account, no email, and no watermarks.
Works Everywhere
Runs on any modern device — desktop, tablet, or mobile.
What is CSS Unit Converter?
CSS Unit Converter is a free, browser-based developer tool that convert between px, rem, em, pt, vw and vh units. Everything runs in your browser, so your files are processed on your device, not on our servers.
How it works
Upload your file or data by dragging and dropping or browsing your files.
Adjust the available settings to your preference and preview changes in real time.
Click the process button to run the tool.
Download or copy your result instantly — no waiting, no email required.
Perfect for
- Convert between px, rem, em, pt, vw and vh units
- Formatting and validating code or data structures
- Generating tokens, hashes, and unique identifiers
- Converting between data formats for APIs and configs
Why use it
- 100% browser-based — your files are processed on your device
- Free, with no signup or account required
- Instant results with no processing queues
- Works on any device — desktop, tablet, or mobile
- No watermarks on your output
Frequently asked questions
Is CSS Unit Converter free?
Yes, CSS Unit Converter is free to use, with no hidden fees.
Is CSS Unit Converter safe to use?
Yes. CSS Unit Converter runs in your browser, so your files are processed on your device, not on our servers.
Do I need to install anything to use CSS Unit Converter?
No. CSS Unit Converter is a web-based tool that works in any modern browser — Chrome, Firefox, Safari, or Edge. Just open the page and start using it.
How does CSS Unit Converter work?
CSS Unit Converter is a developer tool that convert between px, rem, em, pt, vw and vh units. Add your file, adjust the available settings, and get your result right away, all processed in your browser.
Does CSS Unit Converter work on mobile?
Yes. CSS Unit Converter is fully responsive and works on desktops, tablets, and mobile phones. The interface adapts to your screen size automatically.
Are there any limits when using CSS Unit Converter?
CSS Unit Converter has no daily usage caps and adds no watermarks. Because it runs on your device, very large files depend on your device's memory.
Ready to use CSS Unit Converter?
Free, instant, and runs entirely in your browser. No download, no signup, no limits.
Takes less than 10 seconds