Everyday converter
Speed Converter
Compare driving, running, cycling, aviation, maritime, and scientific speeds across km/h, mph, m/s, ft/s, and knots.
- Instant results
- Private & secureNo data is uploaded
- Works on all devices
Common speed units
- Meters per second (m/s)The unit this converter works in
- Kilometers per hour (km/h)1 m/s = 3.6 km/h
- Miles per hour (mph)1 m/s = 2.236936 mph
- Feet per second (ft/s)1 m/s = 3.28084 ft/s
- Knots (kn)1 m/s = 1.943844 kn
Conversion formula
Every conversion here uses the published factor, not a rounded one.
Example: Kilometers per hour to Miles per hour
1 km/h = 0.6213712 mph
To convert kilometers per hour to miles per hour, multiply by 0.6213712:
100 km/h = 62.13712 mph
Figures on this page are shown to seven significant digits. The converter keeps the full precision and rounds only what it displays.
Did you know?
60 mph works out at exactly 88 feet per second, which is why that figure turns up in stopping-distance rules of thumb.
A knot is one nautical mile per hour, or exactly 1.852 km/h — it is defined from the metre, not from the statute mile.
Frequently asked questions
How many km/h is 60 mph?
60 mph is 96.5606 km/h. Multiply miles per hour by 1.609344 for km/h. 70 mph is 112.654 km/h.
How many mph is 100 km/h?
100 km/h is 62.1371 mph. Divide km/h by 1.609344 for mph. Highway limits often sit near this range.
How many mph is 1 knot?
1 knot is 1.15078 mph. Multiply knots by 1.150779448 for mph. Knots are common for boats and aircraft.
How many mph is 10 meters per second?
10 m/s is 22.3694 mph. Multiply m/s by 2.236936292 for mph. 1 m/s is 2.23694 mph.
Is this speed converter free with no sign-up?
Yes. This converter is free with no sign-up and no account. Use it as often as you need in your browser.