Concentration
Metric Units British Units
Gram per cubic metre
(g/m3)		 Milligram per litre
(mg/l)		 Ounce per gallon
(oz/gal)		 Grain per gallon
(gr/gal)		 Ounce per cubic foot
(oz/ft3)		 Grain per cubic foot
(gr/ft3)
1 Gram per cubic metre
(g/m3)		 1 1.000 028 0.000 160 358 0.070 157 0.000 998 85 0.436 996
 
1 Milligram per litre
(mg/l)		 0.999 97 1 0.000 160 354 0.070 155 0.000 998 82 0.436 983
 
1 Ounce per gallon
(oz/gal)		 6236.0 6236.2 1 437.5 6.228 8 2725.12
 
1 Grain per gallon
(gr/gal)		 14.253 8 14.254 2 0.002 285 71 1 0.014 237 3 6.228 8
 
1 Ounce per cubic foot
(oz/ft3)		 1001.15 1001.18 0.160 544 70.238 1 437.5
 
1 Grain per cubic foot
(gr/ft3)		 2.288 35 2.288 42 0.000 366 957 0.160 544 0.002 285 71 1