METRIC CONVERSION FACTORS 



ac - 4,047 m2 = 0.4047 ha 



ac-ft = 1,233.5 m^ = 1.2335 dam^ 



C' = 1.8 F" 



cm = 0.3937 in. 



cm^ = 0.155 iti^ 



dam^ " 1,000 m-' = 0.8107 ac-ft 



ft^ = 28.3171 X 10~\^ 



ha = 10,000 m^ = 2.471 ac 



hm = 100 m = 328.08 ft 



hm^ = 1 X 10^ m^ 



I.gpm = 0.0758 L/s 



in ■ 2.54 cm 



kg = 2.20462 lb = 1.1 X 10"^ tons 



km = 0.62137 miles 



km2 = 0.3861 mi^ 



L = 0.3532 ft3 = 0.21997 I. gal = 0.26420 U.S. gal 



L/s = 0.035 cfs = 13.193 I.gpm = 15.848 U.S. gpm 



m - 3.2808 ft 



m^ = 10.7636 ft^ 



m3 = 1,000 L = 35.3144 ft^ = 219.97 I. gal = 264.2 U.S. gal 



m^/s = 35.314 cfs 



mm = 0.00328 ft 



tonne = 1,000 kg = 1.1023 ton (short) 



U.S. gpm = 0.0631 L/s 



For Air Samples 



ppm = 100 pphm = 1000 X (Molecular Weight of sub8tance/24.45) mg/m^ 



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