# Convert Units of Mass, Length, and Area

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Area unit, weight unit, area unit conversion area
1 square kilometer (km2) = 100 hectares (ha) = 247.1
Acre (acre) = 0.386 square miles (mile2) 1 square meter (m2) = 10.764 square feet (ft2) 1 arena (acre) = 100 square meters (m2)
1 hectare (ha)=10000 square meters (m2)=2.471 acres (acre) 1 square mile (mile2)=2.590 square kilometers (km2) 1 acre (acre)=0.4047 hectares (ha)=40.47*
10-3 square kilometers (km2) = 4047 square meters (m2)
1 square foot (ft2) = 0.093 square meters (m2) 1 square inch (in2) = 6.452 square centimeters (cm2) 1 square yard (yd2) = 0.8361 square meters (m2)
quality
1 ton (t)=1000 kilograms (kg)=2205 pounds (lb)=
1.102 short tons (sh.ton)=0.934 long tons (long.ton) 1 kilogram (kg)=2.205 pounds (lb) 1 short ton (sh.ton)=0.907 tons (t)=2000 pounds (1b)
1 long ton (long.ton)=1.016 tons (t) 1 pound (lb)=0.454 kilogram (kg) 1 ounce (oz)=28.350 grams (g)
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