Need to change from km/h to mph? This is the perfect tool for you to use to help with conversions between units of speed. Convert easily from km/h to mph.

Two of the most common units of speed are **kilometres per hour** and **miles per hour**. Both are a popular choice for measuring speed internationally, and their main purpose is in signalling speed limits in different countries and on speedometers in cars. It can be very useful to understand the **km/h to mph conversion**, especially when travelling. Have a look at our other speed converters.

## How to use the Converter from km/h to mph?

Enter an amount of kilometres per hour in the box above and click “convert” for our **km/h to mph calculator** to give you an accurate new amount in miles per hour. The opposite conversion would be to convert miles per hour to kilometres per hour.

## Formula for Converting km/h – mph

When you need to **convert kph to mph** it can be useful to know the correct equation to help you do the calculation, and it is the same on used by our **kilometres per hour – miles per hour converter**. For instance, 7 km/h = 4.34 mph and 30 km/h = 18.64 mph

**[number of] kilometres per hour / 1.60934 = [number of] miles per hour**

## When to use km/h?

**Kilometres per hour** is the most common unit of speed that is used worldwide, found on road signs and in car speedometers. It has several different abbreviations such as km/h, the official one, kph, kmph and km/hr. In American English, this unit of speed is spelt as kilometers per hour instead. Use our **kph to mph speed converter** above.

## When to use mph?

The United States and United Kingdom choose to use the imperial unit of speed known as **miles per hour** over kilometres, which is chosen in many other countries. This unit expresses the amount of miles travelled in an hour and are included in car speedometers and road signs. Other abbreviations of the unit include MPH or mi/h. Try out the **km/h to mph calculator**.

### How many is 1 Kilometre per hour in Miles per hour?

**0.62 Miles per hour**

`(1km/h = 0.62mph)`

### How many are 2 Kilometres per hour in Miles per hour?

**1.24 Miles per hour**

`(2km/h = 1.24mph)`

### How many are 3 Kilometres per hour in Miles per hour?

**1.86 Miles per hour**

`(3km/h = 1.86mph)`

### How many are 4 Kilometres per hour in Miles per hour?

**2.49 Miles per hour**

`(4km/h = 2.49mph)`

### How many are 5 Kilometres per hour in Miles per hour?

**3.11 Miles per hour**

`(5km/h = 3.11mph)`

### How many are 10 Kilometres per hour in Miles per hour?

**6.21 Miles per hour**

`(10km/h = 6.21mph)`

### How many are 15 Kilometres per hour in Miles per hour?

**9.32 Miles per hour**

`(15km/h = 9.32mph)`

### How many are 20 Kilometres per hour in Miles per hour?

**12.43 Miles per hour**

`(20km/h = 12.43mph)`

### How many are 25 Kilometres per hour in Miles per hour?

**15.53 Miles per hour**

`(25km/h = 15.53mph)`

### How many are 30 Kilometres per hour in Miles per hour?

**18.64 Miles per hour**

`(30km/h = 18.64mph)`

### How many are 50 Kilometres per hour in Miles per hour?

**31.07 Miles per hour**

`(50km/h = 31.07mph)`

### How many are 100 Kilometres per hour in Miles per hour?

**62.14 Miles per hour**

`(100km/h = 62.14mph)`

### How many are 200 Kilometres per hour in Miles per hour?

**124.27 Miles per hour**

`(200km/h = 124.27mph)`

### How many are 500 Kilometres per hour in Miles per hour?

**310.69 Miles per hour**

`(500km/h = 310.69mph)`

### How many are 1000 Kilometres per hour in Miles per hour?

**621.37 Miles per hour**

`(1000km/h = 621.37mph)`