Speed Converter
Free, locally-processed speed converter for fast and secure results.
Runs locally in your browser
Your inputs are processed locally in your browser and are not uploaded or stored by us.
Converts speeds across metric, imperial, and nautical units.
How to use the Speed Converter
- Enter the speed value.
- Select the original unit.
- Select the target unit.
- Click Calculate.
Speed conversion methodology
1 m/s = 3.6 km/h
1 knot = 1.852 km/h
The calculator uses meter per second (m/s) as the canonical base unit.
Speed conversion example
Value1
From UnitKnot
To UnitKilometer per hour
1 knot × 1.852
Result: 1.852 km/h
Notes
- A knot is a distinct speed unit equivalent to one nautical mile per hour, and is not equivalent to km/h.
- The calculator uses documented conversion constants without rounding intermediate calculation values. Display formatting may shorten the visible result.
- Negative speed values are rejected as invalid.