Convert mile per hour to kilometer per hour

1 mph = 1.609344 km/h

sig figs
60 mph = 96.6 km/h
60 mph in every speed unit
millimeter per year846,000,000,000 mm/yr
millimeter per day2,320,000,000 mm/day
millimeter per hour96,600,000 mm/h
inch per day91,200,000 in/day
foot per day7,600,000 ft/d
inch per hour3,800,000 in/h
meter per day2,320,000 m/d
millimeter per minute1,610,000 mm/min
meter per hour96,600 m/h
inch per minute63,400 in/min
millimeter per second26,800 mm/s
foot per minute5,280 ft/min
centimeter per second2,680 cm/s
meter per minute1,610 m/min
inch per second1,060 in/s
kilometer per hour96.6 km/h
foot per second88 ft/s
mile per hour60 mph
knot52.1 kn
meter per second26.8 m/s
mach (sea level)0.0788 Ma
kilometer per second0.0268 km/s
speed of light8.95e-08 c
How the conversion works

Multiply by 1.609344 to go from mile per hour to kilometer per hour, or divide by it to go back. Every conversion on this site routes through the SI value (m/s) rather than a table of pairwise factors, so a round-trip returns exactly what you started with.

Going the other way? kilometer per hour to mile per hour: 1 km/h = 0.6213711922 mph.

mile per hour to kilometer per hour: common values
1 mph1.609344 km/h
2 mph3.218688 km/h
3 mph4.828032 km/h
5 mph8.04672 km/h
10 mph16.09344 km/h
15 mph24.14016 km/h
20 mph32.18688 km/h
25 mph40.2336 km/h
50 mph80.4672 km/h
75 mph120.7008 km/h
100 mph160.9344 km/h
250 mph402.336 km/h
500 mph804.672 km/h
1000 mph1,609.344 km/h