NNWS Tools

Unit Converter

Length, weight, temperature, area, speed and more.

Runs on your device
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Converters tools

Unit ConverterCSV ↔ JSONNumber BaseCurrency ConverterTimezone Converter

About Unit Converter

Unit Converter is a free, private converters tool that lets you length, weight, temperature, area, speed and more. Like every tool on NWS Tools, it runs entirely in your browser — nothing is uploaded, there are no accounts, and there's no tracking. Just open it and go.

Frequently asked questions

Is Unit Converter free to use?
Yes. Unit Converter is completely free, with no account, sign-up or limits.
Are my files or data uploaded anywhere?
No. Unit Converter runs entirely in your browser. Your files, text and numbers are processed on your own device and are never uploaded to a server.
Does Unit Converter work offline?
Once the page has loaded, most tools keep working with no internet connection. NWS Tools is a Progressive Web App you can even install.
Do I need to install any software?
No installation is required — Unit Converter works instantly in any modern browser on desktop or mobile.