Gallon Converter
Unit ConversionConvert US gallons to quarts, pints, cups, fluid ounces, liters, milliliters, cubic meters, cubic feet and cubic inches at once, and back.
Gallons
US Customary
Metric
Cubic Units
1 Gallon = 0.832674 UK Imperial Gallons ⟷ 1 UK Imperial Gallon = 1.20095 Gallons
1 Gallon = 4 Quarts ⟷ 1 Quart = 0.25 Gallons
1 Gallon = 8 Pints ⟷ 1 Pint = 0.125 Gallons
1 Gallon = 16 Cups ⟷ 1 Cup = 0.0625 Gallons
1 Gallon = 128 Fluid Ounces ⟷ 1 Fluid Ounce = 0.0078125 Gallons
1 Gallon = 3.785412 Liters ⟷ 1 Liter = 0.264172 Gallons
1 Gallon = 3,785.411784 Milliliters ⟷ 1 Milliliter = 0.000264172 Gallons
1 Gallon = 0.00378541 Cubic Meters ⟷ 1 Cubic Meter = 264.172052 Gallons
1 Gallon = 0.133681 Cubic Feet ⟷ 1 Cubic Foot = 7.480519 Gallons
1 Gallon = 231 Cubic Inches ⟷ 1 Cubic Inch = 0.004329 Gallons
Found this calculator useful?
From Scratch To $10K/Month In 60 Days
This is a proven money making system that takes students by the hand to make at least $10,000 per month, every month. Students get 12 weeks of guided coaching in addition to the "MPS Super Funnel" and tools.
We value your privacy and promise not to sell or misuse your information. Here's our privacy policy.
Calculator Stats
Creators
Odeh Ahwal0people find this calculator helpful
Views
Helpful
Saved
Embeds
Calculator Stats
Creators
Odeh Ahwal0people find this calculator helpful
Views
Helpful
Saved
Embeds
Unit Conversion calculators
Sponsored
SponsoredThis gallon converter shows a volume in US gallons next to quarts, pints, cups, fluid ounces, liters, milliliters, cubic meters, cubic feet and cubic inches. Type into any box and every other box updates as you type, so it converts from gallons and back to them from any of the other units.
The US gallon is defined as exactly 231 cubic inches, and the smaller units (quarts, pints, cups and fluid ounces) each divide it evenly, as the sections below show. Because the inch is exactly 2.54 centimeters, the gallon is also exactly 3.785411784 liters, so the converter never rounds a factor; only the results it shows are rounded.
This page uses the US liquid gallon. The UK imperial gallon is a different, larger unit, and the US dry gallon is a third one, both explained below, together with how much a gallon of water weighs.
How Much Does a Gallon of Water Weigh
A US gallon of water weighs about 8.33 pounds at room temperature (20 °C, 68 °F) and about 8.35 pounds near 4 °C, where water is densest. The weight changes because water expands as it warms. These figures multiply the gallon's exact volume by the density of water from the NIST Chemistry WebBook.
| Water Temperature | Pounds per Gallon | Kilograms per Gallon |
|---|---|---|
| 4 °C (39.2 °F) | 8.345 lb | 3.785 kg |
| 20 °C (68 °F) | 8.33 lb | 3.779 kg |
An imperial gallon of water is heavier, about 10 pounds, because it holds more water. For milk, honey or other liquids, the Gallons to Pounds Converter uses each liquid's own density.
US Gallon vs Imperial Gallon
The US gallon is defined as exactly 231 cubic inches, about 3.785 liters. The UK imperial gallon is exactly 4.54609 liters, about 277.42 cubic inches, so an imperial gallon is about 1.2 US gallons. NIST Handbook 44 traces the split: the American colonists used the English wine gallon of 231 cubic inches, and in 1824 Britain replaced its wine and ale gallons with the imperial gallon, defined as the volume of 10 pounds of water.
To convert a UK figure, type it into the UK Imperial Gallons box above: 1 imperial gallon shows as about 1.20095 US gallons, and every other box follows. All the other boxes on this page use US measures.
The US dry gallon, 268.8025 cubic inches, is an eighth of a US bushel, a unit for grain and produce rather than liquids. Fuel economy in miles per gallon also differs: the same car shows a higher number in UK miles per gallon than in US miles per gallon, because each imperial gallon is bigger.
How Many Quarts in a Gallon
A US gallon is exactly 4 US quarts. Each quart is 2 pints or 4 cups, so the same gallon is also 8 pints or 16 cups. The UK imperial gallon is 4 imperial quarts too, but an imperial quart is about 1.137 liters against the US quart of about 0.946 liter, so a US gallon is only about 3.33 imperial quarts.
How Many Ounces in a Gallon
A US gallon holds exactly 128 US fluid ounces, 32 in each quart. The US cup is a sixteenth of a US gallon (8 fluid ounces) and the US fluid ounce is 1/128 of a US gallon, while the imperial fluid ounce is 1/160 of an imperial gallon. For trips priced by the gallon, the Fuel Calculator works out fuel use and cost.
Gallon Conversion Chart
Common amounts of US gallons in the other units on this page. Quarts, cups, fluid ounces and liters are exact; cubic feet are rounded to 4 decimal places.
| Gallons | Quarts | Cups | Fluid Ounces | Liters | Cubic Feet |
|---|---|---|---|---|---|
| 0.25 gal | 1 qt | 4 cups | 32 fl oz | 0.946352946 L | 0.0334 ft³ |
| 0.75 gal | 3 qt | 12 cups | 96 fl oz | 2.839058838 L | 0.1003 ft³ |
| 1.5 gal | 6 qt | 24 cups | 192 fl oz | 5.678117676 L | 0.2005 ft³ |
| 3 gal | 12 qt | 48 cups | 384 fl oz | 11.356235352 L | 0.401 ft³ |
| 4 gal | 16 qt | 64 cups | 512 fl oz | 15.141647136 L | 0.5347 ft³ |
| 6 gal | 24 qt | 96 cups | 768 fl oz | 22.712470704 L | 0.8021 ft³ |
| 12 gal | 48 qt | 192 cups | 1,536 fl oz | 45.424941408 L | 1.6042 ft³ |
| 50 gal | 200 qt | 800 cups | 6,400 fl oz | 189.2705892 L | 6.684 ft³ |
Single Volume Conversions
Single conversions between two of the units on this page, one page per pair of units, each with its own table, formula and examples.
Cubic Units
- Cubic Feet to Cubic Meters Converter: 1 cubic meter is about 35.314667 cubic feet
- Cubic Feet to Gallons Converter: 1 cubic foot is about 7.480519 gallons
- Cubic Inches to Gallons Converter: 1 gallon = 231 cubic inches
- Liters to Cubic Meters Converter: 1 cubic meter = 1,000 liters
- Cubic Feet to Liters Converter: 1 cubic foot = 28.316846592 liters
- Cubic Inches to Cubic Feet Converter: 1 cubic foot = 1,728 cubic inches
- Cubic Inches to Liters Converter: 1 liter is about 61.023744 cubic inches
- Cubic Meters to Gallons Converter: 1 cubic meter is about 264.172052 gallons
- Milliliters to Cubic Meters Converter: 1 cubic meter = 1,000,000 milliliters
Milliliters and Liters
- Cups to Liters Converter: 1 liter is about 4.226753 cups
- Cups to Milliliters Converter: 1 cup = 236.5882365 milliliters
- Liters to Gallons Converter: 1 gallon = 3.785411784 liters
- Gallons to Milliliters Converter: 1 gallon = 3,785.411784 milliliters
- Liters to Pints Converter: 1 liter is about 2.113376 pints
- Liters to Quarts Converter: 1 liter is about 1.056688 quarts
- Milliliters to Pints Converter: 1 pint = 473.176473 milliliters
- Milliliters to Fluid Ounces Converter: 1 fluid ounce = 29.5735295625 milliliters
- Milliliters to Quarts Converter: 1 quart = 946.352946 milliliters
- Milliliters to Liters Converter: 1 liter = 1,000 milliliters
- Liters to Fluid Ounces Converter: 1 liter is about 33.814023 fluid ounces
Spoons, Fluid Ounces and Cups
- Cups to Pints Converter: 1 pint = 2 cups
- Cups to Quarts Converter: 1 quart = 4 cups
- Cups to Gallons Converter: 1 gallon = 16 cups
- Cups to Fluid Ounces Converter: 1 cup = 8 fluid ounces
- Fluid Ounces to Quarts Converter: 1 quart = 32 fluid ounces
- Fluid Ounces to Pints Converter: 1 pint = 16 fluid ounces
Pints, Quarts and Gallons
- Gallons to Pints Converter: 1 gallon = 8 pints
- Gallons to Quarts Converter: 1 gallon = 4 quarts
- Pints to Quarts Converter: 1 quart = 2 pints
Other Volume Converters
Each converter below shows one volume in several units at once, starting from a different unit.
- Cubic Feet Converter: cubic feet to cubic inches, cubic yards, gallons, liters and cubic meters at once
- Cubic Meter Converter: cubic meters to liters, milliliters, cubic feet, cubic yards and gallons at once
- Volume Converter: any volume in every unit at once, from milliliters to cubic yards, including UK imperial units
Frequently Asked Questions
How many gallons is 2 liters?
About 0.528344 gallon, a little over half a gallon.
How many fluid ounces are in 2.5 gallons?
320 US fluid ounces, at 128 fluid ounces per gallon.
How many gallons is 100 liters?
About 26.42 US gallons, or about 22 imperial gallons.
How many gallons is 5 quarts?
1.25 gallons: 4 quarts make a gallon, and the fifth quart is a quarter gallon more.
How many gallons is a cubic foot?
About 7.4805 US gallons.
How many water bottles make a gallon?
About 7.57 bottles of 500 mL (16.9 fl oz) make one US gallon, since a gallon is 3,785.411784 mL.
SponsoredSponsored