Converters
Speed Converter
Convert between speed units — kilometers per hour, miles per hour, meters per second and knots.
1 km/h equals
0.621372 mph
How it works
Enter a speed and choose your units for an instant, accurate result. Every unit is defined relative to meters per second.
Common conversions
1 km/h = 0.621 mph, 100 km/h ≈ 62 mph, and 1 knot = 1.852 km/h.
Frequently Asked Questions
A knot is one nautical mile per hour, used in aviation and marine navigation. It equals 1.852 km/h.