16 C.F.R. § 500.18

SI metric prefixes.

The following chart indicates SI prefixes that may be used on a broad range of consumer commodity labels:

Prefix | Symbol | Multiplying factor 1; Kilo- | k | x 10 3; Deca- | da | × 10; Deci- | d | × 10 −1; Centi- | c | × 10 −2; Milli- | m | × 10 −3; Micro- | µ | × 10 −6