US Cups to Sextarii (cup to sextarius)
1 US cup equals 0.4334440974 sextarii (rounded).
How to convert US cups to sextarii
To convert US cups to sextarii, multiply the number of US cups by 0.4334440974. The factor is rounded to 10 significant digits. To go the other way, multiply sextarii by 2.307102591 (rounded).
sextarii = US cups × 0.4334440974
Example: 10 US cups = 4.334440974 sextarii.
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 sextarius 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
Sextarius (sextarius)
One 48th of an amphora, about 0.55 L. The standard Roman liquid measure, a little under an imperial pint.
Literally a sixth, the sextarius was one sixth of a congius and one forty-eighth of an amphora quadrantal, which means one forty-eighth of a cubic Roman foot. It was the working core of Roman capacity measure, since both the liquid and the dry tables were built on it.
Its size is more contested than most. Wikipedia's text calculates about 540.3 mL from the cubic foot, its table gives 546 mL, which is the figure used here, and archaeological vessels fall between 500 and 580 mL, with no two surviving examples exactly alike. Wikipedia compares it to about 95 percent of an imperial pint, which is why it is often called a Roman pint. Smaller units were fractions of it, such as the cyathus at one twelfth, while the modius was 16 sextarii.
1 sextarius = 0.5458333333 liters (approximately).
Sources: Wikipedia: Ancient Roman units of measurement
Related conversions
- Sextarii 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 sextarii
- Milliliters to sextarii
- US gallons to sextarii
- US fluid ounces to sextarii
See all volume units.