3. Should the net quantity of contents be stated in both grams and ounces?
Answer: Food labels printed must show the net contents in both metric (grams, kilograms, milliliters, liters) and U.S. Customary System (ounces, pounds, fluid ounces) terms. The metric statement may be placed either before or after the U.S. Customary statement, or above or below it. Each of the following examples is correct (additional examples appear in the regulations):
Net wt 1 lb 8 oz (680g)
Net wt 1 lb 8 oz 680 g
500 ml (1 pt 0.9 fl oz)
Net contents 1 gal (3.79 L)
P.L. 102-329, August 3, 1992; 21 CFR 101.105