Wine Bottles to US Cups (btl to cup)
1 wine bottle equals 3.170064628 US cups (rounded).
How to convert wine bottles to US cups
To convert wine bottles to US cups, multiply the number of wine bottles by 3.170064628. The factor is rounded to 10 significant digits. To go the other way, multiply US cups by 0.315450982.
US cups = wine bottles × 3.170064628
Example: 10 wine bottles = 31.70064628 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
Wine Bottle (btl)
The standard wine bottle holds 750 mL, about 25 US fluid ounces.
Standardisation of the 750 milliliter bottle is recent. Wikipedia does not explain why that figure was chosen, only that it has become the standard unit for wine sales. In the United States, bottles before 1979 followed the fifth, one fifth of a US gallon, about 757 mL. In 1979 the US adopted metric sizes for wine and spirits, making the basic bottle 750 mL as in Europe.
Larger formats are counted in multiples of this bottle: a magnum is two, a double magnum four and a Methuselah eight, while smaller ones include the half bottle of 375 mL and the 187.5 mL piccolo. A 750 mL bottle is exactly three quarters of a liter, roughly 25.4 US fluid ounces. Because the number is set by law for trade, a bottle sold today is the same size in Bordeaux, Napa or Sydney, whatever the shape of the glass.
1 wine bottle = 0.75 liters (exactly).
Sources: Wikipedia: Wine bottle
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
Related conversions
- US cups to wine bottles (reverse)
- Wine bottles to liters
- Wine bottles to milliliters
- Wine bottles to US gallons
- Wine bottles to US fluid ounces
- Liters to US cups
- Milliliters to US cups
- US gallons to US cups
- US fluid ounces to US cups
- Cubic meters to US cups
- Cubic centimeters to US cups
- US quarts to US cups
- US pints to US cups
- US tablespoons to US cups
- US teaspoons to US cups
- Metric cups to US cups
- Metric tablespoons to US cups
See all volume units.