When you need this conversion
Road signs abroad, car and e-bike specs, weather forecasts with wind speeds in km/h, and treadmill settings.
Quick reference
- 30 km/h = 18.6411 mph
- 50 km/h = 31.0686 mph
- 80 km/h = 49.7097 mph
- 100 km/h = 62.1371 mph
- 110 km/h = 68.3508 mph
- 130 km/h = 80.7783 mph
Driving in Europe
Motorway limits of 120–130 km/h are about 75–81 mph. Town limits of 50 km/h are about 31 mph, and 30 km/h zones are about 19 mph.
Common mistakes
Dividing by 1.6 in a hurry. 1.6 slightly overestimates mph. Close enough for driving; use the exact factor for anything written down.
Mixing up the direction. km/h numbers are always bigger than mph numbers for the same speed.
For the reverse, use mph to km/h.