3 tools
Converters
Convert between units, formats and notations in one step. Free and entirely client-side.
Free forever · nothing uploaded · no signup
- Byte Size ConverterBytes, KB, MB, GB and more.
- Duration ConverterSeconds to hours, minutes, seconds.
- Speed Converterkm/h, mph, m/s, knots.
- 1
Nothing is uploaded
Every tool on this page runs inside your browser tab. Your files are read from disk into memory and never sent anywhere.
- 2
No account, no cap
No signup, no email, no daily limit, no watermark, and no paid tier waiting behind the third file.
- 3
Keeps working offline
Load the page once and it still works with the network off, which is the clearest proof that nothing was ever being uploaded.