Speed Converter
Enter a speed, pick your From and To units, and get the converted value instantly.
Overview
Speed units combine a length unit and a time unit, so a conversion factor between two speed units is really the product of a length-unit factor and a time-unit factor. This tool covers meters/second, kilometers/hour, miles/hour, knots, and feet/second with those combined factors already worked out.
Examples
Driving speed
100 km/h to mph
62.137119 mph
Wind/nautical speed
20 knots to km/h
37.04 km/h
How It Works
- Enter the value you want to convert.
- Choose the From unit and the To unit.
- The converted value appears instantly.
Use Cases
Driving abroad
Convert speed limits or dashboard readings between km/h and mph.
Weather and sailing
Convert wind or vessel speed between knots and km/h or mph.
Tips
- A knot is one nautical mile per hour (1.852 km/h) — used for wind speed, aviation, and marine navigation rather than road speeds.
FAQ
No. Every conversion runs locally in your browser.
Meters per second is the SI base unit for speed — common in physics and engineering contexts rather than everyday speed readings.