Cubic Miles to US Gallons (mi³ to gal)
1 cubic mile equals 1,101,117,147,429 US gallons (rounded).
How to convert cubic miles to US gallons
To convert cubic miles to US gallons, multiply the number of cubic miles by 1,101,117,147,429. The factor is rounded to 10 significant digits. To go the other way, multiply US gallons by 9.081685835×10⁻¹³ (rounded).
US gallons = cubic miles × 1,101,117,147,429
Example: 10 cubic miles = 11,011,171,474,286 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
Cubic Mile (mi³)
About 4.168 cubic kilometers. Used for very large volumes.
Defined as the volume of a cube whose sides are one mile, this unit belongs to the imperial and US customary systems and is used in the United States, Canada and the United Kingdom. Because the international mile is exactly 1,609.344 meters, the cubic mile is fixed too: about 4.168182 cubic kilometers, a value NIST lists as 4.168 182 times 10 to the 9 cubic meters.
Other equivalents give a feel for its size. Wikipedia lists about 3.38 million acre-feet, around 1.1 trillion US liquid gallons and roughly 147 billion cubic feet. The figure used here is 4,168,181,825,440.58 liters, matching the Wikipedia value of 4.168181825 km3. Since a cubic kilometer is about 0.2399 of a cubic mile, converting between the two is a matter of a factor a little over four.
1 cubic mile = 4,168,181,825,441 liters (approximately).
Sources: Wikipedia: Cubic mile; NIST SP 811 Appendix B.8; Wikipedia: Cubic metre
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 cubic miles (reverse)
- Cubic miles to liters
- Cubic miles to milliliters
- Cubic miles to US cups
- Cubic miles 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.