Tierces to US Cups (tierce to cup)
1 tierce equals 672 US cups exactly.
How to convert tierces to US cups
To convert tierces to US cups, multiply the number of tierces by 672. This factor is exact. To go the other way, multiply US cups by 0.001488095238 (rounded).
US cups = tierces × 672
Example: 10 tierces = 6,720 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
Tierce (tierce)
42 US gallons (159 L), a third of a tun. The size of a standard oil barrel.
Tierce is French for a third, and the cask earned the name as a third of a wine pipe, holding 42 wine gallons. Wikipedia credits a definition under Richard III with fixing the wine tierce at that size, and by around 1700 it was a standard shipping container for many goods in the English colonies, not only wine.
Its best known afterlife is in the oil fields. Pennsylvania producers, who started after the Drake well of 1859, first used whatever barrels they could find, including 40 and 45 gallon ones. Around 1866 they settled on the wine tierce, two gallons larger than a standard whisky barrel, and the 42 gallon figure was formally standardised by 1872 and adopted by federal agencies in 1882.
In US gallons the tierce is about 159 litres (158.99 L as used here), and the imperial equivalent of 35 gallons is nearly identical at 159.1 litres. That coincidence is why the unit lives on in the oil barrel, still quoted in petroleum markets even though no one ships crude in wooden casks of that size.
1 tierce = 158.9872949 liters (approximately).
Sources: Wikipedia: Barrel (unit); Wikipedia: Tun (unit)
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 tierces (reverse)
- Tierces to liters
- Tierces to milliliters
- Tierces to US gallons
- Tierces 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.