Magnums to US Gallons (magnum to gal)
1 magnum equals 0.3962580785 US gallons (rounded).
How to convert magnums to US gallons
To convert magnums to US gallons, multiply the number of magnums by 0.3962580785. The factor is rounded to 10 significant digits. To go the other way, multiply US gallons by 2.523607856.
US gallons = magnums × 0.3962580785
Example: 10 magnums = 3.962580785 US gallons.
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
Magnum (magnum)
1.5 liters, two standard wine bottles.
Latin magnus, great, gives the magnum its name, a bottle holding 1.5 liters, exactly two standard 750 mL bottles. It is the smallest of the large formats in Wikipedia's table of wine bottle sizes and the one most often seen in ordinary shops and restaurants.
Wikipedia reports that most Champagne houses ferment only up to a magnum in the bottle, because bigger bottles are hard to riddle, and that larger formats are filled by transfer afterwards, which some believe lowers quality. The same article lists the magnum as the first step of a ladder of named sizes: double magnum at 3 L, Rehoboam at 4.5 L, Methuselah at 6 L. Its capacity is equivalent to about 50.7 US fluid ounces. Its date of first use is not given in the sources consulted here.
1 magnum = 1.5 liters (exactly).
Sources: Wikipedia: Wine bottle
US Gallon (gal)
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
Related conversions
- US gallons to magnums (reverse)
- Magnums to liters
- Magnums to milliliters
- Magnums to US cups
- Magnums to US fluid ounces
- Liters to US gallons
- Milliliters to US gallons
- US cups to US gallons
- US fluid ounces to US gallons
- Cubic meters to US gallons
- Cubic centimeters to US gallons
- US quarts to US gallons
- US pints to US gallons
- US tablespoons to US gallons
- US teaspoons to US gallons
- Metric cups to US gallons
- Metric tablespoons to US gallons
See all volume units.