Square Km to Square Miles Converter

A square kilometer is about 0.386102 square miles, a little under four tenths. Going the other way, a square mile is about 2.59 square kilometers.

To convert square kilometers to square miles, divide by 2.589988110336. For example, 10 square kilometers is about 3.861 square miles.

To go from square miles back to square kilometers, multiply by 2.589988110336. For example, 75 square miles equals exactly 194.2491082752 square kilometers.

Common values in square kilometers converted to square miles, rounded to 4 decimal places.

A density per area converts the opposite way to the area itself. 100 people per square kilometer is about 259 people per square mile, because each square mile holds about 2.59 square kilometers. So multiply a density per km² by 2.59 to get it per square mile.

The same rule applies to any rate per area, such as vehicles per lane-kilometer in the Traffic Density Calculator. The Kilometer Converter covers the length behind the factor.

The reverse conversion comes first, then every converter that shares a unit with this page, then the converters that show many area units at once.

• Square Miles to Square Km Converter: 1 square mile equals exactly 2.589988110336 square kilometers
• Acres to Square Kilometers Converter: 1 acre equals exactly 0.0040468564224 square kilometers
• Hectares to Square Kilometers Converter: 1 hectare equals exactly 0.01 square kilometers
• Acres to Square Miles Converter: 1 acre equals exactly 0.0015625 square miles
• Square Miles to Square Feet Converter: 1 square mile equals exactly 27,878,400 square feet
• Land Area Converter: acres, hectares, ares, cents, gunthas, perches and more at once
• Area Converter: any area in 16 units, from square millimeters to square miles