Convert square kilometers (km²) to hectares, acres, square meters, square miles, and other area units.
Calculator
The square kilometer (km²) is a metric unit of area equal to the area of a square with sides of one kilometer. Used for measuring large territories — countries, regions, lakes, and forests.
Common Square Kilometer Conversions
- 1 km² = 1,000,000 m² — exact value by definition.
- 1 km² = 100 ha — one square kilometer equals one hundred hectares.
- 1 km² ≈ 247.1 acres — multiply by 247.1 to get acres.
- 1 km² ≈ 0.386 mi² — multiply by 0.386 to get square miles.
- 1 km² ≈ 1,195,990 yd² — multiply by 1,195,990 to get square yards.
Square kilometers are the standard for measuring the area of countries, administrative regions, and natural landmarks. For reference, the area of London is approximately 1,572 km².