Convert Miles per Hour to Kilometers per Hour
Convert Miles per Hour to Kilometers per Hour instantly. 1 Mile per Hour (mph) equals 1.6093 Kilometers per Hour (km/h).
Miles per Hour to Kilometers per Hour conversion table
| Miles per Hour (mph) | Kilometers per Hour (km/h) |
|---|---|
| 1 mph | 1.6093 km/h |
| 2 mph | 3.2187 km/h |
| 3 mph | 4.828 km/h |
| 5 mph | 8.0467 km/h |
| 10 mph | 16.0934 km/h |
| 20 mph | 32.1869 km/h |
| 50 mph | 80.4672 km/h |
| 100 mph | 160.9344 km/h |
| 500 mph | 804.672 km/h |
| 1,000 mph | 1,609.34 km/h |
1 Mile per Hour = 1.6093 Kilometers per Hour · multiply Miles per Hour by 1.6093
About converting Miles per Hour to Kilometers per Hour
Miles per Hour (mph) and Kilometers per Hour (km/h) are both units of speed, so converting between them is a single multiplication: multiply your Miles per Hour figure by 1.6093. Ten Miles per Hour comes to 16.0934 Kilometers per Hour, and a hundred works out at 160.9344 Kilometers per Hour.
Rule of thumb: going from Miles per Hour to Kilometers per Hour multiplies, so the figure always grows — one Mile per Hour is already 1.6093 Kilometers per Hour. If your answer came out smaller, you have the conversion the wrong way round.
What is a Mile per Hour?
Miles per hour is the road-speed unit that refused to die. It is posted on the signs and printed on the speedometers of the United States and the United Kingdom, two countries that otherwise use metric for most scientific and industrial work — a split that leaves British drivers buying fuel in litres while measuring their speed in miles. It has a second life in the media of both countries, where wind gusts, pitch speeds and tennis serves are quoted in mph out of pure habit rather than for any technical reason.
What is a Kilometer per Hour?
The kilometer per hour is the road-speed unit of nearly every country on Earth: the number on the speedometer, the number on the sign, the number in the ticket. It is a compound unit rather than a fundamental one — a distance divided by a time — and that is precisely why it took hold, because people already thought in kilometers and in hours and so needed no new idea to think in km/h. Its only real rivals are mph, which clings on in the United States and the United Kingdom, and the knot, which owns the sea and the sky.
To put both in perspective: a US interstate limit is typically 65 to 75 miles per hour, while a typical motorway limit is around 120 kilometers per hour.
The converter above updates as you type, and the table lists common values for quick reference. Need the opposite direction? Use the Kilometers per Hour to Miles per Hour converter, or browse all Speed converters.
Frequently asked questions
How many Kilometers per Hour are in one Mile per Hour?
There are 1.6093 Kilometers per Hour in one Mile per Hour.
How do I convert Miles per Hour to Kilometers per Hour?
Multiply the number of Miles per Hour by 1.6093. For example, 10 Miles per Hour = 16.0934 Kilometers per Hour.
What is 100 Miles per Hour in Kilometers per Hour?
100 Miles per Hour is equal to 160.9344 Kilometers per Hour.
How do I convert Kilometers per Hour to Miles per Hour?
Multiply the Kilometers per Hour value by 0.6214 (or divide by 1.6093).
Is this Miles per Hour to Kilometers per Hour conversion exact?
The definition is exact — Miles per Hour and Kilometers per Hour are both fixed against the same base by international agreement — but the decimal shown here is rounded for readability, because the true ratio does not terminate. For engineering or scientific work, carry more decimal places than this page displays.
What is a Mile per Hour?
Miles per hour is the road-speed unit that refused to die. It is posted on the signs and printed on the speedometers of the United States and the United Kingdom, two countries that otherwise use metric for most scientific and industrial work — a split that leaves British drivers buying fuel in litres while measuring their speed in miles. It has a second life in the media of both countries, where wind gusts, pitch speeds and tennis serves are quoted in mph out of pure habit rather than for any technical reason.
What is a Kilometer per Hour?
The kilometer per hour is the road-speed unit of nearly every country on Earth: the number on the speedometer, the number on the sign, the number in the ticket. It is a compound unit rather than a fundamental one — a distance divided by a time — and that is precisely why it took hold, because people already thought in kilometers and in hours and so needed no new idea to think in km/h. Its only real rivals are mph, which clings on in the United States and the United Kingdom, and the knot, which owns the sea and the sky.