Toolstia / speed converter
Speed converter
Convert a speed between kilometres per hour, miles per hour, metres per second, knots and more. Handy for road speeds, wind, flight and sport.
1 Kilometre per hour (km/h) = 0.621371192237 Mile per hour (mph)
| Unit | 1 Kilometre per hour (km/h) equals |
|---|---|
| Metre per second (m/s) | 0.277777777778 |
| Kilometre per hour (km/h) | 1 |
| Mile per hour (mph) | 0.621371192237 |
| Knot (kn) | 0.539956803456 |
| Foot per second (ft/s) | 0.911344415281 |
| Mach (at sea level) | 0.000816297210549 |
| Speed of light (c) | 9.26566931e-10 |
How it works
- Type the value.
- Choose the unit you are converting from and the unit you want.
- Read the result, and scan the table for every other unit at once.
Quick facts
100 km/h is about 62.14 mph. 60 mph is about 96.56 km/h. One knot is one nautical mile per hour, about 1.852 km/h.
Metres per second
Divide km/h by 3.6 to get m/s. A sprinter at 10 m/s is running at 36 km/h.
Mach
Mach 1 is the speed of sound, about 340.29 m/s at sea level in standard conditions. It varies with temperature and altitude, so treat Mach figures as approximate.
Speed of light
Light travels at exactly 299,792,458 m/s.
Questions
How fast is 100 mph in km/h?
About 160.93 km/h.
What is a knot?
One nautical mile per hour.
Is anything uploaded?
No. The conversion happens in your browser and nothing is sent anywhere.