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Welcome to **mph to kmh**, our site which tells you everything about miles per hour to kilometers per hour. If you have been looking for miles to kilometer per hour or mph in kmh, then you are right here, too. Here you can find the formula, a speed converter and useful information. On this site we use the abbreviations mph, MPH and mi/h to denote miles per hour; KMH, km/h and kmh stands for kilometers per hour. Read on to learn how to convert mph to kmh.

## Miles per Hour to Kilometers per Hour

Before delving into miles per hour to kilometers per hour, let’s quickly have a look at the units:

The imperial and United States customary unit of speed *miles per hour* indicate the number of miles traveled in one hour, more precisely statute miles also known as international miles.

Along the same lines does the metric unit of speed *kilometers per hour* express the number of kilometers covered in an hour.

Because one mile has been defined as 1609.344 meters, the mph to kmh formula is:

**[kmh] = [mph] x 1.609344**

This formula can also be written as [kmh] = (25146/15625) x [mph]. In the next section we show you how to convert mi/h to km/h by means of an example.

## Convert Mph to Kmh

To conduct a mph to kmh conversion you have to multiply the speed in miles per hour by 1.609344 to get the equivalent in kilometers per hour.

Instead of the decimal coefficient, you may use the fraction. For example: 20 mph to kph:

20 x 1.609344 = 20 x 25146000/15625 = 32.18688 km/h.

As shown right above, changing miles an hour to kilometers an hour is a simple multiplication.

However, the recommended way to transform the speed from the English unit to the metric unit is by means of our mph in kmh converter below.

## Mph to Kmh Converter

Our mph to kmh calculator changes the speed as you enter the numbers. If you like, press the blue button to swap from mph to kmh to kmh to mph.

### Change mph to kmh

Bookmark us now as miles per hour to kilometers per hour.

Have a look at out sidebar now. There, by means of the search form, you can locate many miles per hour to kilometres per hour conversions.

Supposed you speed is x, then you may look up terms like x miles an hour to kilometres an hour, x mph in kmh and x miles in kilometers per hour calculator, just to give a few examples.

BTW: Frequently asked questions about the subject under consideration include:

- How many kmh in mph?
- How many km/h in mi/h?
- How many kph to mph?

If you’re unsure about the correct answers, then read our article carefully one more time. Before summarizing our article in the next paragraph, here are few more details:

Road traffic speed signs indicate the speed limit in mph, kmh, or both, such as in the Independent State of Samoa. For a list of countries and their usage of mi/h you can check the referenced site.

## Mph in Kmh

You have reached the end of our article about mph in kmh. Frequent speed conversions on our site include, for example:

- N/A

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If you have been searching for *conversion of miles to kilometers per hour* or converter mph to kmh, then you also have found all the information you have been looking for.

The following images serves as our summary of miles per hour to kilometres per hour:

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