Speed Converter — km/h, mph, m/s, Knots
Convert any speed between the common units. Motorway speed limits in Pakistan are in km/h; UK and US roads use mph; aviation and shipping use knots.
Updated
Formula
1 mph = 1.609344 km/h
1 m/s = 3.6 km/h
1 knot = 1.852 km/h
Speeds are converted via metres per second.
Examples
120 km/h to mph
120 Kilometres per hour = 74.564543 Miles per hour
60 mph to km/h
60 Miles per hour = 96.56064 Kilometres per hour
Wind 20 m/s to km/h
20 Metres per second = 72 Kilometres per hour
Reference table
| Unit | In km/h |
|---|---|
| Kilometres per hour (km/h) | 1 |
| Miles per hour (mph) | 1.609344 |
| Metres per second (m/s) | 3.6 |
| Feet per second (ft/s) | 1.09728 |
| Knot (kn) | 1.852 |
| Mach (speed of sound at sea level) | 1,225.044 |
Important information
- The M-2 motorway speed limit for cars is 120 km/h — about 75 mph.
Frequently asked questions
How do I convert km/h to mph?
Divide by 1.609. 100 km/h ≈ 62 mph.
How do I convert m/s to km/h?
Multiply by 3.6.
What is a knot?
One nautical mile (1.852 km) per hour, used at sea and in aviation.
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