Kilderkins to US Fluid Ounces (kil to fl oz)

1 kilderkin equals 2,766.988628 US fluid ounces (rounded).

1 kilderkin = 2,766.988628 US fluid ounces

How to convert kilderkins to US fluid ounces

To convert kilderkins to US fluid ounces, multiply the number of kilderkins by 2,766.988628. The factor is rounded to 10 significant digits. To go the other way, multiply US fluid ounces by 0.000361403726 (rounded).

US fluid ounces = kilderkins × 2,766.988628

Example: 10 kilderkins = 27,669.88628 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

Kilderkin (kil)

Imperial (British)Traditional unit (still used in some regions)

18 imperial gallons (81.8 L), two firkins or half a UK beer barrel.

Dutch kinderkin, a small cask, is the origin of this word, and a kilderkin holds 18 imperial gallons, exactly 81.82962 liters, or two firkins, half a barrel. Nominally that is 144 pints, though a real cask yields fewer because of sediment and other unsellable beer.

Its size has shifted with the gallon. Before 1824 the beer kilderkin was always 18 ale or beer gallons, but that gallon itself changed: kilderkins held 16 gallons (73.94 L) from the mid fifteenth century, 17 gallons (78.56 L) from 1688 and 18 gallons (83.18 L) from 1803. The Weights and Measures Act 1824 replaced these with the imperial gallon and brought the cask to its present volume. A wine kilderkin was far smaller, around 13 imperial gallons. The Campaign for Real Ale uses the kilderkin as its yardstick for planning beer quantities at festivals and in internal accounts.

1 kilderkin = 81.82962 liters (exactly).

Sources: Wikipedia: Kilderkin; Wikipedia: Firkin (unit); Wikipedia: Barrel (unit)

US Fluid Ounce (fl oz)

US customaryCurrent unit

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

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