US Cups to Jeroboams (cup to jeroboam)

1 US cup equals 0.0788627455 jeroboams exactly.

1 US cup = 0.0788627455 jeroboams

How to convert US cups to jeroboams

To convert US cups to jeroboams, multiply the number of US cups by 0.0788627455. This factor is exact. To go the other way, multiply jeroboams by 12.68025851 (rounded).

jeroboams = US cups × 0.0788627455

Example: 10 US cups = 0.788627455 jeroboams.

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 jeroboam 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)

US customaryCurrent unit

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

Jeroboam (jeroboam)

Cooking & barCurrent unitApproximate value

3 liters, four standard bottles, in Champagne and Burgundy. In Bordeaux a jeroboam is 4.5 liters.

Large wine bottles carry the names of Old Testament kings, and Jeroboam, the first ruler of the northern kingdom of Israel, was given to a bottle that holds four standard 750 mL bottles. In Champagne and Burgundy it holds 3 litres, the figure used here, and it is equal to a double magnum. Wikipedia's article on wine bottles lists a second value of 4.5 litres, or six standard bottles, for the Bordeaux usage, so the name does not always mean the same volume.

That second meaning makes a Bordeaux jeroboam the same size as a rehoboam, which is the name used for 4.5 litres elsewhere. Neighbouring sizes run from the magnum at 1.5 litres to the methuselah at 6 litres, then the salmanazar at 9 litres. Sizes beyond the jeroboam are rare. The Wikipedia article on Champagne bottles confirms the 3 litre size and notes that these names are mostly drawn from biblical figures. Anyone converting should check which region's bottle is meant.

1 jeroboam = 3 liters (approximately).

Sources: Wikipedia: Wine bottle; Wikipedia: Champagne bottle

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