Speed unit converter
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**Mile/hour**

**Definition**

The unit miles per hour (commonly abbreviated as mph) is a standard unit for measuring speed. It can be used to describe the rate at which something moves in miles, or in km/h. There are exactly 1.609344 kilometers in a mile, so 25 miles equals 40.2 km.

**Current use**

Compared to km/h, mph is most used in the United States and the United Kingdom. It's also used by some Canadian railroads, with the Canadian road traffic speeds measured in km/h.

**Kilometer/hour**

**Definition**

The kilometer per hour (or km/h) is a unit of speed used to express the number of kilometers traveled in one hour.

**Origin**

The word kilometer dates back to 1810, and it was not until the mid-late 19th century that kilometers per hour became the most popular measurement of speed. Up to this point, meters per hour were favored for this purpose.

**Current use**

Km/h is currently the most commonly used unit of speed, and is usually used in reference to speed on roads. It's also common for you to see both car speeds and road signs in terms of miles per hour or kilometers per hour. Kilo-meter per hour is the SI unit symbol.

**Mile/hour to Kilometer/hour Conversion Table**

Mile/hour [mi/h] Kilometer/hour [km/h]

0.01 mi/h 0.01609344 km/h

0.1 mi/h 0.1609344 km/h

1 mi/h 1.609344 km/h

2 mi/h 3.218688 km/h

3 mi/h 4.828032 km/h

5 mi/h 8.04672 km/h

10 mi/h 16.09344 km/h

20 mi/h 32.18688 km/h

50 mi/h 80.4672 km/h

100 mi/h 160.9344 km/h

1000 mi/h 1609.344 km/h

**How to Convert Mile/hour to Kilometer/hour**

1 mi/h = 1.609344 km/h

1 km/h = 0.6213711922 mi/h

**Example:** convert 15 mi/h to km/h:

15 mi/h = 15 × 1.609344 km/h = 24.14016 km/h

A unit converter is an online free tool that enables you to convert one unit of measurement into another.

If you are wondering , How to convert Miles per hour (mph) to Kilometers per hour (kph) online speed conversion table. You are at the right place, Calorie to joule online energy conversion formula chart, table to Meters per second to Miles per hour online speed conversion table, formula to find an easy & quick conversion calculator.

An online conversion calculator helps you convert all types of the measurement unit.

Q. Convert 50 mi/h to km/h.

50 mi/h = 50 × 1.609344 km/h = 80.4672 km/h.

Q. How many kilometers per hour makes one mile per hour?

Ans. 1 mi/h = 1.609344 km/h

Q. How many miles per hour makes one kilometer per hour?

Ans. 1 km/h = 0.6213711922 mi/h

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