Convert Kilometers per Hour to Miles per Hour
Convert Kilometers per Hour to Miles per Hour instantly. 1 Kilometer per Hour (km/h) equals 0.6214 Miles per Hour (mph).
Kilometers per Hour to Miles per Hour conversion table
| Kilometers per Hour (km/h) | Miles per Hour (mph) |
|---|---|
| 1 km/h | 0.6214 mph |
| 2 km/h | 1.2427 mph |
| 3 km/h | 1.8641 mph |
| 5 km/h | 3.1069 mph |
| 10 km/h | 6.2137 mph |
| 20 km/h | 12.4274 mph |
| 50 km/h | 31.0686 mph |
| 100 km/h | 62.1371 mph |
| 500 km/h | 310.6856 mph |
| 1,000 km/h | 621.3712 mph |
1 Kilometer per Hour = 0.6214 Miles per Hour · multiply Kilometers per Hour by 0.6214
About converting Kilometers per Hour to Miles per Hour
Kilometers per Hour (km/h) and Miles per Hour (mph) are both units of speed, so converting between them is a single multiplication: multiply your Kilometers per Hour figure by 0.6214. Ten Kilometers per Hour comes to 6.2137 Miles per Hour, and a hundred works out at 62.1371 Miles per Hour.
Rule of thumb: going from Kilometers per Hour to Miles per Hour divides, so the figure always shrinks — it takes about 1.6093 Kilometers per Hour to make a single Mile per Hour. If your answer came out bigger, you have the conversion the wrong way round.
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.
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.
To put both in perspective: a typical motorway limit is around 120 kilometers per hour, while a US interstate limit is typically 65 to 75 miles per hour.
The converter above updates as you type, and the table lists common values for quick reference. Need the opposite direction? Use the Miles per Hour to Kilometers per Hour converter, or browse all Speed converters.
Frequently asked questions
How many Miles per Hour are in one Kilometer per Hour?
There are 0.6214 Miles per Hour in one Kilometer per Hour.
How do I convert Kilometers per Hour to Miles per Hour?
Multiply the number of Kilometers per Hour by 0.6214. For example, 10 Kilometers per Hour = 6.2137 Miles per Hour.
What is 100 Kilometers per Hour in Miles per Hour?
100 Kilometers per Hour is equal to 62.1371 Miles per Hour.
How do I convert Miles per Hour to Kilometers per Hour?
Multiply the Miles per Hour value by 1.6093 (or divide by 0.6214).
Is this Kilometers per Hour to Miles per Hour conversion exact?
The definition is exact — Kilometers per Hour and Miles 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 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.
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.