US Fluid Ounces to US Pecks (fl oz to pk)
1 US fluid ounce equals 0.003356902373 US pecks (rounded).
How to convert US fluid ounces to US pecks
To convert US fluid ounces to US pecks, multiply the number of US fluid ounces by 0.003356902373. The factor is rounded to 10 significant digits. To go the other way, multiply US pecks by 297.8936797 (rounded).
US pecks = US fluid ounces × 0.003356902373
Example: 10 US fluid ounces = 0.03356902373 US pecks.
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 Peck (pk)
One quarter of a US bushel (8.81 L), a traditional measure for apples and other produce.
Anyone who has recited the tongue twister about Peter Piper has met the peck, a dry measure of a quarter bushel. The American version is about 8.81 L, or 8 dry quarts, and the imperial peck set after 1824 is larger at about 9.09 L. Scotland had its own pecks before that act, roughly 9 L for wheat, peas, beans and meal and about 13 L for barley, oats and malt, with four pecks making a firlot.
In Britain the peck is obsolete apart from the rhyme and a few older Bible translations, where it appears in Matthew 5:15. In the United States it lingers in grocery stores and farm stands, where apples and some other produce are still sold by the peck. NIST gives the US peck as 8.809768 L.
1 US peck = 8.809767542 liters (approximately).
Sources: Wikipedia: Peck; NIST Guide to the SI, Appendix B.8: conversion factors
Related conversions
- US pecks 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 pecks
- Milliliters to US pecks
- US gallons to US pecks
- US cups to US pecks
See all volume units.