Quarts to Gallons Converter
Enter a number of US quarts and get gallons at once. There are exactly 4 quarts in a US gallon, so 10 quarts is 2.5 gallons and 6 quarts is 1.5 gallons. The result also shows pints, cups, fluid ounces, liters and milliliters, and Show the work writes out the division so you can check it by hand.
Last updated November 4, 2026
US liquid quarts, 0 or more. Decimals are fine.
Result
10 US quarts = 2.5 US gallons
| Unit | Volume |
|---|---|
| US gallons | 2.5 |
| US pints | 20 |
| US cups | 40 |
| US fluid ounces | 320 |
| Liters | 9.46352946 |
| Milliliters | 9,463.52946 |
| US quarts | US gallons |
|---|---|
| 1 | 0.25 |
| 2 | 0.5 |
| 4 | 1 |
| 5 | 1.25 |
| 10 | 2.5 |
| 20 | 5 |
Show the work
Formula: US gallons = US quarts ÷ 4 (exact)
- You entered 10 US quarts.
- US gallons: 10 ÷ 4 = 2.5.
- US pints: 10 × 2 = 20. US cups: 10 × 4 = 40.
- Liters: 2.5 US gallons × 3.785411784 = 9.46352946 L.
Result: 10 US quarts = 2.5 US gallons
The quarts to gallons formula
US gallons = US quarts ÷ 4
To change quarts into gallons, divide the number of quarts by 4. The relation is exact, because the US customary system defines the quart as one quarter of a gallon, the pint as one eighth, the cup as one sixteenth and the fluid ounce as one 128th. The gallon itself is 231 cubic inches, which is 3.785411784 liters.
The smaller units follow by multiplication: pints are quarts times 2, cups are quarts times 4 and fluid ounces are quarts times 32. Liters are the gallons times 3.785411784, which makes one quart 0.946352946 liters. The calculator shows up to 10 significant digits, so the only rounding is in the display.
See how we calculate for the formulas, sources and review schedule behind every calculator.
Also useful alongside this calculator: Cups to Tablespoons Calculator.
Liquid quarts and dry quarts
This page converts the US liquid quart, which is 0.946352946 liters. The US dry quart is a different unit of about 1.101 liters, used for produce such as berries and not related to the gallon by four. If a recipe or label talks about a quart of strawberries, it means the dry quart. Motor oil, milk, paint and water are measured in liquid quarts.
US quarts and imperial quarts
An imperial quart is a quarter of an imperial gallon, which is 4.54609 liters, so it measures 1.1365225 liters. That is about 20% more than a US quart. The rule of four quarts to a gallon holds in both systems, but the gallons are different sizes. The calculator on this page uses US quarts and US gallons. For imperial gallons use the liters to gallons page, which shows both.
Where quarts and gallons turn up
Engine oil is sold by the quart, and an engine that takes 6 quarts needs 1.5 gallons. Paint is sold in quarts and gallons, and a 5 gallon bucket holds 20 quarts. Soup and stock recipes often use quarts, while milk is sold by the gallon, which is 4 quarts, 8 pints or 16 cups. Fish tanks, pools and water coolers use gallons, and a 20 quart stockpot holds 5 gallons when filled to the brim.
Remember that a pot is never filled to the brim. A 12 quart pot holds 3 gallons of water at the top edge, but you usually fill it to about three quarters.
Gallons and quarts together
Quantities are often written as gallons plus quarts, for example 2 gallons 3 quarts. Divide the extra quarts by 4 and add: 3 quarts is 0.75 gallons, so the total is 2.75 gallons. Enter the total quarts, 11, and the calculator gives the same 2.75 gallons.
How to use the Quarts to Gallons Converter
- Enter the number of US quarts as 0 or more; decimals such as 2.5 are fine.
- Read the gallons in the headline, with pints, cups, fluid ounces, liters and milliliters below.
- Open Show the work to see the division by 4 and the other conversions.
- Use Copy, Print or Share to keep the result.
Worked example: 10 quarts of liquid
Divide 10 quarts by 4 to get 2.5 US gallons. That is 20 pints, 40 cups, 320 fluid ounces or 9.4635 liters. Here are other common values.
| US quarts | US gallons | Liters |
|---|---|---|
| 1 | 0.25 | 0.9464 |
| 2 | 0.5 | 1.8927 |
| 4 | 1 | 3.7854 |
| 5 | 1.25 | 4.7318 |
| 10 | 2.5 | 9.4635 |
Frequently asked questions
How many quarts are in a gallon?
There are exactly 4 US liquid quarts in a US gallon, which is also 8 pints, 16 cups or 128 fluid ounces.
How do I convert quarts to gallons?
Divide the number of quarts by 4. For example, 10 quarts divided by 4 equals 2.5 gallons.
How many gallons is 6 quarts?
Six quarts is 1.5 US gallons, or 1 gallon and 2 quarts. In liters that is about 5.68 liters.
Is a US quart the same as an imperial quart?
No. An imperial quart is about 1.1365 liters, roughly 20% larger than the 0.9464 liter US quart, though both are a quarter of their gallon.
How do I convert gallons back to quarts?
Multiply the gallons by 4. The Gallons to Liters page also shows quarts, and the Volume Converter handles other units.