US Cups to Amphorae (cup to amphora)
1 US cup equals 0.009030085363 amphorae (rounded).
How to convert US cups to amphorae
To convert US cups to amphorae, multiply the number of US cups by 0.009030085363. The factor is rounded to 10 significant digits. To go the other way, multiply amphorae by 110.7409243 (rounded).
amphorae = US cups × 0.009030085363
Example: 10 US cups = 0.09030085363 amphorae.
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
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
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
Related conversions
- Amphorae to US cups (reverse)
- US cups to liters
- US cups to milliliters
- US cups to US gallons
- US cups to US fluid ounces
- US cups to cubic meters
- US cups to cubic centimeters
- US cups to US quarts
- US cups to US pints
- US cups to US tablespoons
- US cups to US teaspoons
- US cups to metric cups
- US cups to metric tablespoons
- Liters to amphorae
- Milliliters to amphorae
- US gallons to amphorae
- US fluid ounces to amphorae
See all volume units.