Ounces per gallon (US) to grams per cubic meter conversion calculator above calculates how many grams per cubic meter are in 'X' ounces per gallon (US) (where 'X' is the number of ounces per gallon (US) to convert to grams per cubic meter). In order to convert a value from ounces per gallon (US) to grams per cubic meter (from oz/gal to g/m³) just type the number of oz/gal to be converted to g/m³ and then click on the 'convert' button.