Metric Cups to US Gallons (cup to gal)
1 metric cup equals 0.06604301309 US gallons (rounded).
How to convert metric cups to US gallons
To convert metric cups to US gallons, multiply the number of metric cups by 0.06604301309. The factor is rounded to 10 significant digits. To go the other way, multiply US gallons by 15.14164714 (rounded).
US gallons = metric cups × 0.06604301309
Example: 10 metric cups = 0.6604301309 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
Metric Cup (cup)
Exactly 250 mL. The cup used in Australia, New Zealand and most Commonwealth recipes.
A metric cup is a cup tamed by decimal thinking. Australia, Canada, New Zealand and some other former British colonies that metricated use a round 250 milliliters, exactly a quarter of a liter. Canada's older cup had been eight imperial fluid ounces, about 227.3 mL, so the metric version is noticeably larger, and Canadian recipes now usually use the 250 mL cup.
The metric cup is not an SI unit, only a practical convention, and it differs from the US cups in useful ways. It is about 6 percent larger than the US customary cup at 236.6 mL and about 4 percent larger than the 240 mL US label cup. Its arithmetic is simple: four cups make a liter, and a cup holds 50 metric teaspoons or 16 and two thirds tablespoons of 15 mL. Many recipes outside the US skip cups entirely and give dry ingredients in grams, because volume is a rough proxy for flour.
1 metric cup = 0.25 liters (exactly).
Sources: Wikipedia: Metric cup; Wikipedia: Cup (unit)
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 metric cups (reverse)
- Metric cups to liters
- Metric cups to milliliters
- Metric cups to US cups
- Metric cups to US fluid ounces
- Metric cups to cubic meters
- Metric cups to cubic centimeters
- Metric cups to US quarts
- Metric cups to US pints
- Metric cups to US tablespoons
- Metric cups to US teaspoons
- Metric cups to metric tablespoons
- Metric cups to metric teaspoons
- 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 tablespoons to US gallons
- Metric teaspoons to US gallons
See all volume units.