Speed Converter
Convert between mph, km/h, knots, m/s and Mach with common reference speeds for walking, cycling and motorway driving
Closest Reference Speed
70 mph = Motorway
All Conversions
mph
70.00
km/h
112.65
knots
60.83
m/s
31.29
Mach
0.05
Common Speeds
Walking speed
1.4 mph
2.3 km/h
Running pace
6 mph
9.7 km/h
Cycling
20 mph
32.2 km/h
Car (city)
50 mph
80.5 km/h
Motorway
70 mph
112.7 km/h
Train (express)
100 mph
160.9 km/h
Aeroplane
300 mph
482.8 km/h
Speed of sound
767 mph
1234.4 km/h
mph: miles per hour (US/UK). km/h: kilometres per hour (metric). knots: used in aviation and maritime. m/s: metres per second (physics/science). Mach: speed of sound (aviation).
Related Tools
Fuel Consumption Converter
🔄 Unit ConvertersConvert between L/100km, MPG UK, MPG US and km/L with vehicle efficiency ratings and common references
Distance Calculator
📍 Maps & DistanceCalculate the distance between major cities worldwide. See great-circle distance in km and miles, estimated flight time, and time zone difference for 50+ global cities.