Online calculator to convert square miles to square kilometers (mi2 to km2) with formulas, examples, and tables. Our conversions provide a quick and easy way to convert between Area units.
Conversion Calculator
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Convert mi2 to km2
TIP: If the result of your conversion is 0, try increasing the "Decimals".
Conversion Definitions
The following is a list of definitions relating to conversions between square miles and square kilometers.
What is a square mile (mi2)?
A square mile is a unit of area in both US Customary Units as well as the Imperial System. The symbol for square mile is mi2 or sq mi. There are 0.38610216 square miles in a square kilometer. A square mile is calculated as the area of a square that has 1 mile on each side.
What is a square kilometer (km2)?
A square kilometer is a unit of area in the Metric System. The symbol for square kilometer is km2. There are 2.58998811 square kilometers in a square mile. A square kilometer is calculated as the area of a square that has 1 kilometer on each side. The International spelling for this unit is square kilometre.
Conversion Formula
Let's take a closer look at the conversion formula so that you can do these conversions yourself with a calculator or with an old-fashioned pencil and paper.
The formula to convert from mi2 to km2 is:
km2 = mi2 x 2.58998811
Conversion Example
Next, let's look at an example showing the work and calculations that are involved in converting from square miles to square kilometers (mi2 to km2).
Square Miles to Square Kilometer Conversion Example
Task: Convert 200 square miles to square kilometers (show work) Formula: mi2 x 2.58998811 = km2 Calculations: 200 mi2 x 2.58998811 = 517.997622 km2 Result: 200 mi2 is equal to 517.997622 km2
Conversion Table
For quick reference purposes, below is a conversion table that you can use to convert from mi2 to km2.
Square Miles to Square Kilometers Conversion Chart
square miles (mi2) | square kilometers (km2) |
---|---|
1 mi2 | 2.58998811 km2 |
2 mi2 | 5.17997622 km2 |
3 mi2 | 7.76996433 km2 |
4 mi2 | 10.35995244 km2 |
5 mi2 | 12.94994055 km2 |
6 mi2 | 15.53992866 km2 |
7 mi2 | 18.12991677 km2 |
8 mi2 | 20.71990488 km2 |
9 mi2 | 23.30989299 km2 |
10 mi2 | 25.8998811 km2 |
20 mi2 | 51.7997622 km2 |
30 mi2 | 77.6996433 km2 |
40 mi2 | 103.5995244 km2 |
50 mi2 | 129.4994055 km2 |
75 mi2 | 194.24910825 km2 |
100 mi2 | 258.998811 km2 |
250 mi2 | 647.4970275 km2 |
500 mi2 | 1,294.994055 km2 |
750 mi2 | 1,942.4910825 km2 |
1,000 mi2 | 2,589.98811 km2 |
2,500 mi2 | 6,474.970275 km2 |
5,000 mi2 | 12,949.94055 km2 |
7,500 mi2 | 19,424.910825 km2 |
10,000 mi2 | 25,899.8811 km2 |
25,000 mi2 | 64,749.70275 km2 |
50,000 mi2 | 129,499.4055 km2 |
75,000 mi2 | 194,249.10825 km2 |
100,000 mi2 | 258,998.811 km2 |
250,000 mi2 | 647,497.0275 km2 |
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