Fluid ounce
Definitions and equivalences
Imperial fluid ounce US customary fluid ounce US food labelling fluid ounce US regulation 21 CFR 101.9(b)(5)(viii) also defines a fluid ounce as exactly 30 millilitres, but this is for use in nutrition labelling only.

Fluid ounce

Section Title: Definitions and equivalences
Table Section Text: Imperial fluid ounce US customary fluid ounce US food labelling fluid ounce US regulation 21 CFR 101.9(b)(5)(viii) also defines a fluid ounce as exactly 30 millilitres, but this is for use in nutrition labelling only.

1 imperial fluid ounce	=	​1⁄160	imperial gallon

=	​1⁄40	imperial quart

=	​1⁄20	imperial pint

=	​1⁄10	imperial cup

=	​1⁄5	imperial gill

=	8	imperial fluid drams

=	28.4130625	millilitres

≈	1.733871455	cubic inches

≈	0.960759940	US fluid ounces

≈	the volume of 1 avoirdupois ounce of water

Sentence(s)

The imperial fluid ounce is exactly 28.4130625 ml.

final_sentence: The imperial fluid ounce is exactly 28.4130625 ml.