volume · International · Modern
Non-SI unit accepted for use with the SI; 1 L = 1 dm³ = 10⁻³ m³.
Converter
volume · UK / US · Modern / historical
fluid ounce (Imperial)
fl oz (Imp)exact
- Record
- M088
- Definition quality
- Standardized
- Conversion mode
- multiplicative
- Calculator
- Fully calculable
Definition
1 Imperial fluid ounce = 1/160 Imperial gallon = 28.4130625 mL.
Reference value
One fluid ounce (Imperial) is exactly 0.0000284130625 cubic metres.
History & use
UK Imperial capacity divides the pint into 20 fluid ounces and the gallon into 8 pints.
Modern use
Modern use is context-dependent and varies by region or measurement system.
Did you know?
The Imperial fluid ounce is slightly smaller than the U.S. fluid ounce even though the Imperial gallon is larger.
Sources & evidence
Source tier Tier A · confidence High
Related measurements
volume · International · Modern
1 mL = 10^-3 L = 10^-6 m³.
volume · International · Modern
Coherent SI derived unit for volume, equal to metre cubed.
fluid ounce (US)
fl oz (US)volume · UK / US · Modern / historical
1 U.S. fluid ounce = 1/128 U.S. gallon = 29.5735295625 mL.
cup (US customary)
cup (US)volume · UK / US · Modern / historical
1 U.S. customary cup = 8 U.S. fluid ounces = 236.5882365 mL.
pint (US liquid)
pt (US liq)volume · UK / US · Modern / historical
1 U.S. liquid pint = 1/8 U.S. gallon = 0.473176473 L.
pint (Imperial)
pt (Imp)volume · UK / US · Modern / historical
1 Imperial pint = 1/8 Imperial gallon = 0.56826125 L.
quart (US liquid)
qt (US liq)volume · UK / US · Modern / historical
1 U.S. liquid quart = 1/4 U.S. gallon = 0.946352946 L.