Fluid ounces (US) to Fluid ounces (UK) converter

To convert fluid ounces (US) to fluid ounces (UK), enter the value in the first field. The result in fluid ounces (UK) is calculated automatically using the exact conversion factor.

1 US fl oz ≈ 1.04084273079 UK fl oz
1 UK fl oz ≈ 0.960759940404 US fl oz

Formula: UK fl oz ≈ US fl oz × 1.04084273079
US fl oz ≈ UK fl oz × 0.960759940404

Definitions: 1 US fl oz = 1/128 US gal; 1 UK fl oz = 1/160 UK gal

The US fluid ounce is 1/128 of a US gallon. It is the volume unit printed on American drink bottles, cans and nutrition labels, and it is not the same thing as the ounce of weight.

The imperial fluid ounce is 1/20 of an imperial pint and is about 4% smaller than the US fluid ounce. It appears in older British recipes and on some UK products, although metric units dominate labels today.

See the conversion table with commonly used values, handy for quick reference or study.