Speed Converter
Convert speed and velocity between mph, km/h, m/s, knots, and ft/s.
How Speed Converter works
Key speed conversions
1 mph = 1.60934 km/h. 1 km/h = 0.621371 mph. 1 m/s = 3.6 km/h = 2.23694 mph. 1 knot = 1.852 km/h = 1.15078 mph. UK roads use mph; most of the world uses km/h.
Knots
A knot is one nautical mile per hour. 1 nautical mile = 1,852 metres. Knots are used in aviation and maritime navigation.
Frequently asked questions
How many km/h is 60 mph?
60 mph = 96.56 km/h.
How many mph is 100 km/h?
100 km/h = 62.14 mph.
What is 30 mph in km/h?
30 mph = 48.28 km/h. A common urban speed limit comparison.
How fast is a knot?
1 knot = 1.852 km/h = 1.15078 mph.
Related calculators