How many kilometers per hour are in 1 mile per hour?

1 mile per hour = 1.6093 kilometers per hour.

What is 55 miles per hour in kilometers per hour?

55 miles per hour = 88.5139 kilometers per hour.

Convert miles per hour to kilometers per hour

1 mile per hour equals 1.6093 kilometers per hour. Type any number below — the other side updates instantly.

miles per hour

mph

kilometers per hour

km/h

Type to convert

Miles per hour to kilometers per hour — quick reference

miles per hour	kilometers per hour
5 mph	8.0467 km/h
10 mph	16.0934 km/h
25 mph	40.2336 km/h
35 mph	56.327 km/h
45 mph	72.4205 km/h
55 mph	88.5139 km/h
65 mph	104.607 km/h
75 mph	120.701 km/h
85 mph	136.794 km/h
100 mph	160.934 km/h

How to convert

Multiply the number of mile per hours by 1.6093 to get kilometer per hours. To go the other way, multiply kilometer per hours by 0.621371 to get mile per hours. The conversion factor is fixed and exact, so you can use this on any value.

About these units

Miles per hour

Definition: Miles per hour (symbol: mph) is a unit of speed expressing the number of miles traveled in one hour. 1 mph equals about 1.609 km/h.
History: Mph entered widespread use with the spread of automobiles in the early 20th century. The US has used mph as the standard speed unit since road signage was federalized.
Current use: Mph is the standard speed unit on roads in the United States, the United Kingdom, and a few smaller nations.

Kilometers per hour

Definition: Kilometers per hour (symbol: km/h) is a unit of speed expressing the number of kilometers traveled in one hour.
History: Kmh became the international standard for road speed during the 20th century as countries adopted the metric system.
Current use: The standard road-speed unit in nearly every country except the US and UK.

Frequently asked

How many kilometers per hour are in 1 mile per hour?: 1 mile per hour = 1.6093 kilometers per hour.
How do you convert miles per hour to kilometers per hour?: Multiply the number of mile per hours by 1.6093 to get kilometer per hours. To go the other way, multiply kilometer per hours by 0.621371 to get mile per hours. The conversion factor is fixed and exact, so you can use this on any value.
What is 55 miles per hour in kilometers per hour?: 55 miles per hour = 88.5139 kilometers per hour.

Reverse conversionKilometers per hour to miles per hour

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