How to Convert Square Kilometers

A kilometer is a unit of length used in the metric system. Just as miles are used as a measurement of distance in the United States, kilometers are used in countries that employ the metric system. A square kilometer is a measurement of area. It is the mathematical result of multiplying the length and the width of an area; this is the same formula used in the decimal system. Converting metric kilometers into decimal measurements requires the use of certain mathematical formulas.

Difficulty: Easy

Instructions

Things You'll Need:

• Calculator

How to Convert Square Kilometers

1. Convert square kilometers into square miles using multiplication. Multiply the number of square kilometers by 0.386109 for the result. This number is the equivalent of approximately 1/3 of a mile; that is, one kilometer equals approximately 1/3 of a mile.
   For example:
   20 x 0.386109 = 7.72218
   20 square kilometers equals 7.72218 square miles.

2. Reverse the equation by using division. To convert square miles into square kilometers, divide the amount of square miles by 0.386109.

3. Convert square kilometers in square acres using multiplication. Multiply the amount of square kilometers by 247.105381. There are approximately 247.1 square acres in one square kilometer.
   For example:
   50 x 247.105381 = 12,355.269049999999
   50 square kilometers equals 12,355.269049999999 square acres.

4. Reverse the equation by using division. To convert square acres into square kilometers, divide the amount of square acres by 247.105381.

References

• Interactive Mathematics: Prealgebra; Academic Systems; 2000

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