Is Font Size Converter free to use?

Yes, Font Size Converter is completely free to use. No registration or login required — all features are available directly.

Does Font Size Converter upload my data to a server?

No. Font Size Converter uses pure front-end technology. All processing happens in your browser — no data is uploaded to any server. The tool works even without an internet connection.

Can I use Font Size Converter on my phone?

Yes. Font Size Converter is fully responsive and works on phones, tablets, and desktops. The interface automatically adapts to your screen size.

Do I need to install any software to use Font Size Converter?

No. Font Size Converter is an online tool — just open the webpage in your browser. No downloads, plugins, or installations needed.

Is my data safe when using Font Size Converter?

Yes. Since all data is processed locally in your browser and never sent to any server, there is no risk of data leakage. Your data stays under your control at all times.

Are there any usage limits for Font Size Converter?

Font Size Converter is a free online tool with no usage limits. Since processing is done locally, performance depends on your device. For very large files, we recommend processing in batches for the best experience.

Free Online Font Size Converter - PX to EM, REM, PT, Percent Con...

How to Use

Enter a font size value, select the source unit (PX/EM/REM/PT/%), and set the base font size (default 16px).

All equivalent values are calculated instantly with formulas. Essential for responsive web design.

🔤 Font Size Converter

How to Use