US Fluid Ounces to US Gills (fl oz to gi)
1 US fluid ounce equals 0.25 US gills exactly.
How to convert US fluid ounces to US gills
To convert US fluid ounces to US gills, multiply the number of US fluid ounces by 0.25. This factor is exact. To go the other way, multiply US gills by 4.
US gills = US fluid ounces × 0.25
Example: 10 US fluid ounces = 2.5 US gills.
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 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
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
Related conversions
- US gills to US fluid ounces (reverse)
- US fluid ounces to liters
- US fluid ounces to milliliters
- US fluid ounces to US gallons
- US fluid ounces to US cups
- US fluid ounces to cubic meters
- US fluid ounces to cubic centimeters
- US fluid ounces to US quarts
- US fluid ounces to US pints
- US fluid ounces to US tablespoons
- US fluid ounces to US teaspoons
- US fluid ounces to metric cups
- US fluid ounces to metric tablespoons
- Liters to US gills
- Milliliters to US gills
- US gallons to US gills
- US cups to US gills
See all volume units.