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Convert Mile to Kilometer (mi to km)

In next fields, kindly type your value in the text box under title [ From: ] to convert from mile to kilometer (mi to km). As you type your value, the answer will be automatically calculated and displayed in the text box under title [ To: ].


Mile (abbreviation: mi): is an English unit of length of distance equal to 5,280 feet, or 1,760 yards, and standardised as exactly 1,609.344 metres by international agreement in 1959.

Kilometer (abbreviation: km): is a unit of length in the SI metric system, equal to one thousand metres (kilo- being the prefix for 1000). It is now the measurement unit used officially for expressing distances between geographical places on land in most of the world countries.

How to Convert Miles to Kilometers

Example: How many kilometers are equivalent to 21.62 miles?


1 miles = 1.609344 kilometers

21.62 miles = Y kilometers

Assuming Y is the answer, and by criss-cross principle;

Y equals 21.62 times 1.609344 over 1

(i.e.) Y = 21.62 * 1.609344 / 1 = 34.79401728 kilometers

Answer is: 34.79401728 kilometers are equivalent to 21.62 miles.

Practice Question: Convert the following units into km:

N.B.: After working out the answer to each of the next questions, click adjacent button to see the correct answer.

( i ) 77.68 mi

( ii ) 14.95 mi

( iii ) 30.91 mi

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  • USMA
  • NIST

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