Speed Converter
Driving, running, wind and pace.
Runs on your device
At a glance
- Processing:
- Runs locally in your browser
- Privacy:
- Your files stay on your device — nothing is uploaded to a server
About this tool
Convert metres per second, km/h, mph, feet per second and knots. Covers driving abroad, running pace, cycling and wind speeds.
How to use it
- Enter the speed.
- Pick the from-unit.
- Pick the to-unit.
Frequently asked questions
How do I convert speeds?
Enter a value, pick the source and target units, and read the result instantly. For example: 100 km/h = 62.137 mph. All math runs locally in your browser.
Is my data uploaded or stored?
No. Unit conversion is pure arithmetic in your browser — nothing is sent, uploaded or stored.
How precise are the results?
Conversions use double-precision factors and display up to 6 significant decimals with trailing zeros stripped, so everyday and technical values both stay accurate.