US Gills to US Fluid Ounces (gi to fl oz)
1 US gill equals 4 US fluid ounces exactly.
How to convert US gills to US fluid ounces
To convert US gills to US fluid ounces, multiply the number of US gills by 4. This factor is exact. To go the other way, multiply US fluid ounces by 0.25.
US fluid ounces = US gills × 4
Example: 10 US gills = 40 US fluid ounces.
Pints, quarts, gallons and fluid ounces differ between the US and the UK. Units are labeled 'US' or 'imperial' to avoid confusion.
About these units
US Gill (gi)
Four US fluid ounces (118.29 mL), a quarter of a pint. A traditional measure for spirits.
Pour a quarter of a pint and the result is a gill, a small liquid measure that is now mostly a matter for spirits and old books. In the United States the gill is 4 fluid ounces, about 118.3 mL, because the US pint is 16 fluid ounces. The British imperial gill is a quarter of the larger imperial pint: 5 imperial fluid ounces, about 142.1 mL, so the two countries' gills differ by roughly a fifth.
Local usage added more variety. Pub spirit measures in Britain and Ireland were fractions of a gill: 1/6 gill (23.7 mL) in England and Wales, 1/4 gill (35.5 mL) in Northern Ireland and the Republic of Ireland, and 1/5 gill (28.4 mL) on the Isle of Man until 2022. In northern England a half pint was sometimes called a gill. After metrication most British pubs moved to 25 or 35 mL. NIST gives the US gill as 0.118294 L.
1 US gill = 0.1182941183 liters (approximately).
Sources: Wikipedia: Gill (unit); NIST Guide to the SI, Appendix B.8: conversion factors
US Fluid Ounce (fl oz)
One 128th of a US gallon, 29.5735 mL. Not the same as the weight ounce, and about 4% larger than the imperial fluid ounce.
Fluid ounce began as an attempt to link volume to weight: the volume occupied by one ounce of some substance, such as wine in England or water in Scotland. Definitions varied by region and by liquid. When Britain defined its imperial gallon in 1824 as the space of ten pounds of water, the imperial fluid ounce came out so that an ounce of water weighs about one avoirdupois ounce. The US fluid ounce followed a different path and comes from the older wine gallon.
The US fluid ounce is exactly 1/128 of a US gallon, 29.5735295625 milliliters, about 4 percent bigger than the imperial one at 28.4130625 milliliters. American nutrition labels use yet another figure, treating one fluid ounce as 30 milliliters, a convenient rounding for serving sizes. The name is a trap, because a fluid ounce measures space while a weight ounce measures mass. A US fluid ounce of water weighs a bit more than an ounce of weight, while a fluid ounce of honey weighs considerably more.
1 US fluid ounce = 0.02957352956 liters (approximately).
Sources: Wikipedia: Fluid ounce; NIST SP 811, Appendix B.8: conversion factors for volume; 21 CFR 101.9: nutrition labeling household measures
Related conversions
- US fluid ounces to US gills (reverse)
- US gills to liters
- US gills to milliliters
- US gills to US gallons
- US gills to US cups
- Liters to US fluid ounces
- Milliliters to US fluid ounces
- US gallons to US fluid ounces
- US cups to US fluid ounces
- Cubic meters to US fluid ounces
- Cubic centimeters to US fluid ounces
- US quarts to US fluid ounces
- US pints to US fluid ounces
- US tablespoons to US fluid ounces
- US teaspoons to US fluid ounces
- Metric cups to US fluid ounces
- Metric tablespoons to US fluid ounces
See all volume units.