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square kilometer
Symbol:  km2 
Category:  Area 
SI Equivalent:  1×106 m2
Dimension L2 
System:  SI 
Convert     km2  
1 km2 =
Area
  Symbol Unit Name
247.105  ac, acre  acre 
1×104  a  are 
10×1033  b  barn 
2.55618×106  bbl (US, liq.)/ft  barrel (US, liq.) per foot 
2.13015×105  bbl (US, liq.)/in  barrel (US, liq.) per inch 
1.91713×106  bbl (US, petrol)/ft  barrel (US, petrol) per foot 
1.59761×105  bbl (US, petrol)/in  barrel (US, petrol) per inch 
1×106    centare 
1.97353×109  cin  circular inch 
1.97353×1015  cmil  circular mil 
100  ha  hectare 
121.295    morgen (Dutch) 
394.907    morgen (Prussian) 
116.75    morgen (South Africa) 
1.54441    quarter section 
988.422    rood (UK) 
0.386102  sq.mi, mi2 (stat.)  section (square statute mile) 
10×1057    shed 
1×1010  cm2  square centimeter 
1076.39  sq. ch. (engineer's)  square chain (engineer's) 
2471.05  sq. ch. (Gunter's)  square chain (Gunter's) 
1×104  dam2  square decameter 
1×108  dm2  square decimeter 
1×10-30  Em2  square exameter 
10×1035  fm2  square femtometer 
10×1035  f2  square fermi 
1.07639×107  ft2  square foot 
1×10-12  Gm2  square gigameter 
100  hm2  square hectometer 
1.55×109  in2, sq. in  square inch 
1×10-6  Mm2  square megameter 
1×106  m2  square meter 
1×1018  ┬Ám2  square micrometer 
1.55×1015  mil2  square mil (thou) 
1.81554×10-2  sq. mi. (geogr.)  square mile (geographical) 
0.291553  sq. mi. (int. naut.)  square mile (int. naut.) 
0.386101  sq. mi. (int.)  square mile (int.) 
1×1012  mm2  square millimeter 
10×1023  nm2  square nanometer 
3.95366×104  rd2  square perch 
10×10-25  Pm2  square petameter 
10×1029  pm2  square picometer 
3.95366×104  rd2  square pole 
3.95366×104  rd2  square rod 
10×10-19  Tm2  square terameter 
1.19599×106  yd2, sq. yd  square yard 
1×1054  ym2  square yoctometer 
2.93874×10-33  Ym2  square yottameter 
9.99473×1047  zm2  square zeptometer 
2.93874×10-33  Zm2  square zettameter 
1.07251×10-2    township (US) 
555.987    vergee (Jersey) 
648.652    vergees (Guernsey) 
Fuel Consumption
  Symbol Unit Name
4.25144×1011  gal/mile  gallon per mile 
1×1014  l/100 km  liter per 100 kilometers 
1×1012  l/km  liter per kilometer 
Hydrodynamic permeability
  Symbol Unit Name
1.01325×1018    darcy 
Glossary