US Fluid Ounces to Jiggers (fl oz to jigger)
1 US fluid ounce equals 0.6666666667 jiggers (rounded).
How to convert US fluid ounces to jiggers
To convert US fluid ounces to jiggers, multiply the number of US fluid ounces by 0.6666666667. The factor is rounded to 10 significant digits. To go the other way, multiply jiggers by 1.5.
jiggers = US fluid ounces × 0.6666666667
Example: 10 US fluid ounces = 6.666666667 jiggers.
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
Jigger (jigger)
1.5 US fluid ounces (44.36 mL). A bar measure for spirits; sizes vary.
As a bartending term, jigger appeared in the United States in the early nineteenth century for a small measure of spirits or wine. A double-ended stainless steel jigger was patented in 1893 by Cornelius Dungan of Chicago. Wikipedia reports that before Prohibition an American jigger was about 2 US fluid ounces, or 59 mL, and that since the late twentieth century it has usually meant 1.5 US fluid ounces, about 44 mL.
Sizes differ by country and by habit. Wikipedia gives single measures of 30 to 44 mL in the United States, 30 mL in Australia, and 25 or 35 mL in the United Kingdom. No official single-shot size exists in the United States except in Utah, where a shot is legally 1.5 US fluid ounces. The figure used here is that modern American 1.5 US fluid ounces, 44.36 mL. A jigger is not part of SI or any national measures law, and NIST lists no jigger.
1 jigger = 0.04436029434 liters (approximately).
Sources: Wikipedia: Jigger (bartending); NIST SP 811 Appendix B.8
Related conversions
- Jiggers 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 jiggers
- Milliliters to jiggers
- US gallons to jiggers
- US cups to jiggers
See all volume units.