US Pecks to US Cups (pk to cup)
1 US peck equals 37.23670996 US cups (rounded).
How to convert US pecks to US cups
To convert US pecks to US cups, multiply the number of US pecks by 37.23670996. The factor is rounded to 10 significant digits. To go the other way, multiply US cups by 0.02685521898 (rounded).
US cups = US pecks × 37.23670996
Example: 10 US pecks = 372.3670996 US cups.
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 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In Britain the peck is obsolete apart from the rhyme and a few older Bible translations, where it appears in Matthew 5:15.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
US Cup (cup)
One sixteenth of a US gallon, 236.588 mL (8 US fluid ounces). The standard US recipe cup.
Cups began as household drinking vessels, not scientific units, which is why they remain the messiest measures in the kitchen. The US customary cup was defined by slicing up the gallon: half a pint, or eight US fluid ounces, about 236.6 milliliters. Unlike the larger units, nobody ever fixed it to a physical vessel, so it exists only as a fraction of the gallon.
The customary cup is not the only American cup. For nutrition labels, US regulation defines a cup as exactly 240 milliliters, a rounder figure that sits slightly above the customary size. Packaged foods therefore list a serving in the legal cup while a measuring cup from the hardware store follows the customary definition. The gap is 3.4 milliliters, which hardly matters for soup but can matter in baking. Cup measures also hide the weight of dry ingredients, since a cup of sifted flour and a cup of packed flour differ substantially, which is why much of the world prefers grams.
1 US cup = 0.2365882365 liters (exactly).
Sources: Wikipedia: Cup (unit); NIST SP 811, Appendix B.8: conversion factors for volume; 21 CFR 101.9: nutrition labeling household measures
Related conversions
- US cups to US pecks (reverse)
- US pecks to liters
- US pecks to milliliters
- US pecks to US gallons
- US pecks to US fluid ounces
- Liters to US cups
- Milliliters to US cups
- US gallons to US cups
- US fluid ounces to US cups
- Cubic meters to US cups
- Cubic centimeters to US cups
- US quarts to US cups
- US pints to US cups
- US tablespoons to US cups
- US teaspoons to US cups
- Metric cups to US cups
- Metric tablespoons to US cups
See all volume units.