Fair Packaging and Labeling Act

The Fair Packaging and Labeling Act is a U.S. law that applies to labels on many consumer products. It requires the label to state:

The contents statement must include both metric and U.S. customary units.

Passed under Lyndon B. Johnson in 1966, the law first took effect on July 1, 1967. The metric labeling requirement was added in 1992 and took effect on February 14, 1994. The law is codified as 15 U.S.C. §§ 1451–1461.