**Definitions:**

**Inch** (abbreviation: **in**): is a unit of length in the (British) imperial and United States customary systems of measurement now formally equal to 1/36 yard but usually taken as 1/12 of a foot.

**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 Inches to Kilometers

*Example: How many kilometers are equivalent to 17.77 inches?*

As;

1 inches = 2.5E-5 kilometers

17.77 inches = Y kilometers

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

Y equals 17.77 times 2.5E-5 over 1

(i.e.) Y = 17.77 * 2.5E-5 / 1 = 0.00044425 kilometers

Answer is: 0.00044425 kilometers are equivalent to 17.77 inches.

*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 ) 36.19 in

( ii ) 61.86 in

( iii ) 35.37 in