mph to kph
Conversion Calculator

Welcome to our mph to kph Conversion Calculator.

Here you will find our online math calculator to help you to convert from speeds in miles per hour to kilometers per hour.

You can also choose your own degree of accuracy.

mph to kph conversion calculator

mph to kph converter



How It Works

Here is our mph to kph conversion calculator which will help you convert between the two different units of length.

The converter will also show you the formula you need to convert between units.

How It Works...

Step 1) Type in the speed.

Step 2) (Optional) - choose what accuracy you want your answer - the default is 1 decimal place.

Step 3) Click the Convert button and the answer will be displayed.

How to do your own mph to kph conversion

How to convert mph to kph

To convert an amount from miles per hour to kilometers per hour, you just need to multiply the amount by 1.609 (to 3dp)

This is because 1 mile = 1.609 km to 3dp.

Worked Examples

1) Convert 75 miles per hour into kilometers per hour.

To convert 75 mph to kph we need to multiply the amount by 1.609 (to 3dp).

75 x 1.609 = 120.675 (to 3dp).

So 75 mph is 120.7 kph (to 1dp).

2) Convert 30 miles per hour into km per hour.

To convert from mph into kph we need to multiply by 1.609 (to 3dp)

30 x 1.609 = 48.27

So 30 mph is 48.3 mph to 1dp.

3) What is 100 miles per hour in km per hour? Give you answer to the nearest whole.

To convert from kph into mph we need to divide by 1.609 (to 3dp)

100 x 1.609 = 160.9

So 100 mph = 161 kph to the nearest whole.

Quick Conversions Facts miles per hour to kilometers per hour

Here are some a few quick simple conversion facts from mph to kph (to 2dp).

  • 1 mph = 1.61 kph
  • 10 mph = 16.09 kph
  • 20 mph = 32.19 kph
  • 30 mph = 48.28 kph
  • 40 mph = 64.37 kph
  • 50 mph = 80.47 kph
  • 60 mph = 96.56 kph
  • 70 mph = 112.65 kph
  • 80 mph = 128.75 kph
  • 90 mph = 144.84 kph
  • 100 mph = 160.93 kph
  • 200 mph = 321.87 kph
  • 1000 mph = 1609.34 kph

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Take a look at some more of our resources similar to our mm to inches conversion calculator.

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Our conversion calculators will help you to convert between units of measure.

We have a range of calculators so that it is easy to select the type of measures you want to convert.

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Here are some of our specific online calculators for converting between two units of measure.

Online Speed Conversion Check

Every effort has been made to ensure that the Length Conversion calculator on this page is as accurate as possible.

If you wish to double check that the conversion that you wish to make is correct, or if the conversion that you are looking for is not here, use the link below which will open an online conversion checker in a new browsing window.

This online converter deals with many more types of measurement units.

Using the link below will open the onlineconversion checker in a new browswer window.


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