Measure Converter
Speed Converter
Did You Know?
The speed of light (299,792 km/s) is the universe’s ultimate speed limit.
Mach 1 (1,235 km/h) is the speed of sound, varying with altitude.
The fastest land animal, the cheetah, sprints at 120 km/h, while Usain Bolt’s top speed is 44.72 km/h—slower than a house cat!
Quick Reference
- 1 m/s = 3.6 km/h
- 1 km/h ≈ 0.621 mph
- 1 mph ≈ 1.609 km/h
- 1 knot ≈ 1.852 km/h
- 1 ft/s ≈ 1.097 km/h
- 1 in/s ≈ 0.0914 km/h