Butts (pipe) to US Fluid Ounces (butt to fl oz)

1 butt (pipe) equals 16,128 US fluid ounces exactly.

1 butt (pipe) = 16,128 US fluid ounces

How to convert butts (pipe) to US fluid ounces

To convert butts (pipe) to US fluid ounces, multiply the number of butts (pipe) by 16,128. This factor is exact. To go the other way, multiply US fluid ounces by 0.00006200396825 (rounded).

US fluid ounces = butts (pipe) × 16,128

Example: 10 butts (pipe) = 161,280 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

Butt (pipe) (butt)

US customaryHistorical unit (no longer in standard use)

126 US gallons (477 L), also called a pipe: half a tun.

Butt is an obsolete English liquid measure equal to two hogsheads, and for wine it is also called a pipe. At 126 US wine gallons, or 105 imperial gallons, it holds about 477 litres (476.96 L as used here). It is half a tun, so two butts fill the largest standard cask.

The size was never fully fixed. Depending on the definition a butt ranged from about 450 to 1,060 litres, and an ale butt of roughly 108 imperial gallons (about 491 litres) differed from the wine butt. The Oxford English Dictionary is cited as warning that these standards were not always followed precisely.

The informal word buttload, meaning a large quantity, is one proposed descendant of the measure. A 1695 gauging manual by James Lightbody lists beer and ale vessels by name and content.

1 butt (pipe) = 476.9618848 liters (approximately).

Sources: Wikipedia: Butt (unit); Wikipedia: Tun (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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