CFR > Title 16 - Commercial Practices > CHAPTER I—FEDERAL TRADE COMMISSION > SUBCHAPTER E—RULES, REGULATIONS, STATEMENT OF GENERAL POLICY OR INTERPRETATION AND EXEMPTIONS UNDER THE FAIR PACKAGING AND LABELING ACT (parts 500 to 503) > PART 500—REGULATIONS UNDER SECTION 4 OF THE FAIR PACKAGING AND LABELING ACT > 500.18—SI metric prefixes.

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 103
Deca- da x 10
Deci- d x 10−1
Centi- c x 10−2
Milli- m x 10−3
Micro- µ x 10−6
1 102=100; 103=1000; 10−1=0.1; 10−2=0.01.
Thus, 2 kg=2×1000 g=2000 g, and 3 cm=3×0.01 m=0.03 m.