Legal Units
1 square kilometer (km) = 100 hectares (hm) = 247.1 acres (acre) = 0.386 square miles (mile)
1 square meter (m) = 10.764 square feet (ft) 1 Ares (are) = 100 square meters (m)
1 hectare (hm) = 15 mu = 1hm2 = 10000 square meters (m) = 2.471 acres (acre) = 0.01 square kilometers (where h Representing 100 meters, hm2 means the square of 100 meters)
1 square mile (mile) = 2.590 square kilometers (km)
1 acre (acre) = 0.4047 hectares (ha ) = 4.047×10 square kilometers (km) = 4047 square meters (m)
1 square foot (ft) = 0.093 square meters (m) 1 square inch (in) = 6.452 square centimeters (cm)
1 square yard (yd) = 0.8361 square meters (m)
1 mu = 2000/3 square meters ≈ 666.666 square meters
city system of measurement
1 square mile=22500 square feet
1 square foot=100 square feet
1 square foot=100 square inches< /p>
1 square inch=100 square centimeters
1 square centimeter=100 square centimeters
1 square centimeter=100 square millimetres