US Bushels to US Cups (bu to cup)

1 US bushel equals 148.9468398 US cups (rounded).

1 US bushel = 148.9468398 US cups

How to convert US bushels to US cups

To convert US bushels to US cups, multiply the number of US bushels by 148.9468398. The factor is rounded to 10 significant digits. To go the other way, multiply US cups by 0.006713804745 (rounded).

US cups = US bushels × 148.9468398

Example: 10 US bushels = 1,489.468398 US cups.

Pints, quarts, gallons and fluid ounces differ between the US and the UK. Units are labeled 'US' or 'imperial' to avoid confusion.

About these units

US Bushel (bu)

US customaryTraditional unit (still used in some regions)

Exactly 2,150.42 cubic inches (35.239 L). A dry measure for grain and produce; commodity prices are quoted per bushel.

English statutes tied the bushel to the cylinder-shaped Winchester measure, 18.5 inches across and 8 inches deep, which holds about 2,150.42 cubic inches. The United States kept that volume, 35.239 L, when Britain did not: the Weights and Measures Act 1824 replaced it with an imperial bushel of 8 imperial gallons, about 36.37 L. As a result, an American and a British bushel differ by about 3 percent. The name probably comes from Old French boissiel, a little box.

The bushel entered England after the Norman Conquest as a step between the pound and the ton, and it was later redefined by weight, 56 avoirdupois pounds in the sixteenth century. Today it is largely a mass measure for grain, quoted in standard weights per commodity: 60 lb for wheat and soybeans, 56 lb for shelled maize, 48 lb for barley and 32 lb for oats in the US. Commodity futures prices on American exchanges are still quoted per bushel.

1 US bushel = 35.23907017 liters (approximately).

Sources: Wikipedia: Bushel; NIST Guide to the SI, Appendix B.8: conversion factors

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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