Amphorae to US Cups (amphora to cup)
1 amphora equals 110.7409243 US cups (rounded).
How to convert amphorae to US cups
To convert amphorae to US cups, multiply the number of amphorae by 110.7409243. The factor is rounded to 10 significant digits. To go the other way, multiply US cups by 0.009030085363 (rounded).
US cups = amphorae × 110.7409243
Example: 10 amphorae = 1,107.409243 US cups.
Pints, quarts, gallons and fluid ounces differ between the US and the UK. Units are labeled 'US' or 'imperial' to avoid confusion.
Approximate value. Standards for the amphora varied by place and period, so this converter uses the most commonly cited value. Treat results as estimates, not exact figures.
About these units
Amphora (amphora)
The 'amphora quadrantal', defined as one cubic Roman foot (about 26.2 L). The standard Roman liquid measure for wine and oil.
Greek amphoreus, shortened from amphiphoreus, meant carried on both sides, a reference to the two handles of the clay jar that gave the unit its name. The Romans took the word over during the period of Hellenization, and Cato the Younger is the earliest known writer to use it. Amphorae carried wine, olive oil, garum, grain and olives around the Mediterranean, and most stood about 45 cm tall.
As a measure, the Roman amphora is properly the amphora quadrantal, defined as one cubic pes, the Roman foot of roughly 296 mm. Wikipedia's table gives 26.2 L for it, while the text of the same article rounds the cube to about 25.9 L, so the figure used here is 26.2 L and the true value is uncertain by a few percent. It equals 8 congii or 48 sextarii. Another Wikipedia article mentions a wine amphora of about 39 L, which shows that the jar and the legal unit were not always the same size. In modern terms the quadrantal is close to 7 US gallons.
1 amphora = 26.2 liters (approximately).
Sources: Wikipedia: Ancient Roman units of measurement; Wikipedia: Amphora
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 amphorae (reverse)
- Amphorae to liters
- Amphorae to milliliters
- Amphorae to US gallons
- Amphorae 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.