Omers to US Cups (omer to cup)

1 omer equals 9.298856243 US cups (rounded).

1 omer = 9.298856243 US cups

How to convert omers to US cups

To convert omers to US cups, multiply the number of omers by 9.298856243. The factor is rounded to 10 significant digits. To go the other way, multiply US cups by 0.1075401075.

US cups = omers × 9.298856243

Example: 10 omers = 92.98856243 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 omer varied by place and period, so this converter uses the most commonly cited value. Treat results as estimates, not exact figures.

About these units

Omer (omer)

Biblical (Hebrew)Historical unit (no longer in standard use)Approximate value

A tenth of an ephah, about 2.2 L. The daily ration of manna in the Exodus account.

In Exodus 16 each Israelite is told to gather an omer of manna per person, which is the best known appearance of the word. It is sometimes translated as sheaf, and the same name was given to the first cut of the barley harvest offered at the Temple, from which the counting of the weeks to Shavuot takes its name. Elsewhere the unit is called the isaron, a tenth of an ephah.

Its size is disputed. The Jewish Study Bible is reported to give about 2.3 litres, close to the 2.2 litres used here, while the 1906 Jewish Encyclopedia is reported to give about 3.64 litres. Rabbinic tradition counts it as 43.2 eggs, and a flour omer is put at roughly 1.56 to 1.77 kg. The liquid equivalent is a tenth of a bath. In modern terms it is a little over a two litre soda bottle.

1 omer = 2.2 liters (approximately).

Sources: Wikipedia: Omer (unit); Wikipedia: Biblical and Talmudic units of measurement

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

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