METRIC CONVERSION FACTORS 



ac =• 4,047 m2 = 0.4047 ha 



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



C - 1.8 F* 



CO = 0.3937 in. 



cm^ > 0.155 in^ 



daa^ - 1,000 m^ - 0.8107 ac-ft 



ft^ - 28.3171 X 10~V 



ha » 10,000 m2 - 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 



ka2 = 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 



o - 3.2808 ft 



m^ - 10.7636 ft^ 



V? » 1,000 L » 35.3144 ft^ - 219.97 I. gal - 264.2 U.S. gal 



m^/s - 35.314 cfs 



mo = 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 3ubstance/24.45) mg/m^ 



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