Square Kilometers to Square Miles

Between square kilometers and square miles there is one constant ratio, 0.38610216. Type any amount of square kilometers into the widget and it multiplies that amount by 0.38610216 to produce square miles.

The ratio works in both directions: multiply by 0.38610216 to go from square kilometers to square miles, or multiply by 2.58998811 to go from square miles back to square kilometers.

A set of 12 km² amounts is converted to mi² below, using the same function as the converter at the top of the page.

Suppose a quantity is 850 square kilometers. Scaling it by 0.38610216 gives 328.1868348 square miles.

Next, 55 km²: the converter shows 21.23561872 mi². Because the ratio is fixed, the mi² figure is 0.38610216 times the km² figure.

For the last case, begin with 65 square miles. Multiplying by 2.58998811 gives 168.3492272 square kilometers.

To start from square miles instead, open Square Miles to Square Kilometers. For that direction 1 mi² = 2.58998811 km², and its reference table is built around square miles as the input.

For other combinations, the Area Converter offers every unit in one pair of dropdowns.

These pages cover neighbouring unit pairs from the same converter.

• Hectares to Acres
• Square Meters to Square Feet
• Acres to Hectares
• Square Feet to Square Meters