US Gallons to Omers (gal to omer)

1 US gallon equals 1.72064172 omers exactly.

1 US gallon = 1.72064172 omers

How to convert US gallons to omers

To convert US gallons to omers, multiply the number of US gallons by 1.72064172. This factor is exact. To go the other way, multiply omers by 0.5811785152 (rounded).

omers = US gallons × 1.72064172

Example: 10 US gallons = 17.2064172 omers.

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

US Gallon (gal)

US customaryCurrent unit

Exactly 231 cubic inches or 3.785411784 liters (128 US fluid ounces). About 17% smaller than the imperial gallon.

The US gallon is a survivor of English wine trade. Around 1706, a statute in Queen Anne's reign fixed the wine gallon at exactly 231 cubic inches, settling confusion among the competing gallons for wine, ale and corn. British colonies in North America used that wine gallon, and in 1824 Britain replaced all its gallons with a new imperial one while the United States kept the old measure. It was adopted as the legal US standard in 1836 and is still defined as exactly 231 cubic inches, or 3.785411784 liters.

That makes the US gallon about 17 percent smaller than the imperial gallon, a difference that explains why American and British fuel-economy figures cannot be compared directly. Everyday uses are milk jugs, paint cans and gasoline pumps. One gallon divides evenly into four quarts, eight pints, sixteen cups and 128 fluid ounces. A gallon of water weighs a little over 8 pounds, an easy figure to remember when loading a car with water jugs.

1 US gallon = 3.785411784 liters (exactly).

Sources: Wikipedia: Gallon; NIST SP 811, Appendix B.8: conversion factors for volume

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

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