Legal unit of measurement
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 acre (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 means 100 meters and hm2 means 100 meters square)
1 square mile (mile)= 2.590 square kilometers (km)
1 acre = 0.4047 ha = 4.047 × 10km = 4047 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
municipal unit of measurement
1 square mile = 22500 square abbot
1 square abbot = 100 square feet
1 square foot = 100 square inches
1 square inch = 100 square minutes
1 square minute = 100 square centimetres
1 square centimeter = 100 square millimetres
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