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. 



CTn2 - 0.155 in2 



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



ft^ = 28.3171 X 10"\^ 



ha « 10,000 m2 = 2.471 ac 



hm = 100 m = 328.08 ft 



hm^ = 1 X 10^ m^ 



I.gpm - 0.0758 L/g 



in " 2.54 cm 



kg = 2.20462 lb * 1.1 x 10"^ tons 



km - 0.62137 miles 



km2 = 0.3861 mi2 



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



L/a = 0.035 cfs » 13.193 I.gpm * 15.848 U.S. gpm 



m » 3.2808 ft 



m^ - 10.7636 ft^^ 



m^ - 1,000 L - 35.3144 ft^ - 219.97 I. gal " 264.2 U.S. gal 



m^/s - 35.314 cfs 



nm - 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 8ubstance/24.45) mg/m^ 



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