one square kilometre (km²) = 1000000 square metres (m²) 
one square kilometre (km²) = 1000000000000 square millimetres (mm²) 
one square kilometre (km²) = 10000000000 square centimetres (cm²) 
one square kilometre (km²) = 100 hectares (ha)
one square kilometre (km²) = 1550003100.0062 square inches (in²) 
one square kilometre (km²) = 10763910.4167097 square feet (ft²) 
one square kilometre (km²) = 1195990.04630109 square yards (yd²) 
one square kilometre (km²) = 0.386102158542446 square miles (mi²) 
one square kilometre (km²) = 247.105381467165 acres (ac)
one square kilometre (km²) = 9476749.30373207 square french feet (fr.ft²) Que
one square kilometre (km²) = 292.492262460867 arpents (a²) Que
one square kilometre (km²) = 29249.2262460867 perches (p²) Que
one square kilometre (km²) = 10763867.3611111 U.S. Survey square feet (ft²)  U.S. Survey
one square kilometre (km²) = 247.104393046628 U.S. Survey acres (ac) U.S. Survey

• Acres
• Arpents
• Hectares
• Perches
• Square Centimetres
• Square Feet
• Square French Feet

• Square Inches
• Square Miles
• Square Millimetres
• Square Yards
• U.S. Survey Acres
• U.S. Survey Square Feet