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

How It Works

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.

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