Quarts to Gallons
An instant quarts-to-gallons converter, with the formula and a reference table below.
| Quarts | Gallons |
|---|---|
| 1 qt | 0.25 gal |
| 2 qt | 0.5 gal |
| 3 qt | 0.75 gal |
| 5 qt | 1.25 gal |
| 10 qt | 2.5 gal |
| 25 qt | 6.25 gal |
| 50 qt | 12.5 gal |
| 100 qt | 25 gal |
How to use
- Enter a value in the Quarts field.
- The Gallons figure appears immediately — no button to press.
- Typing in the Gallons field converts back to Quarts the same way.
- Use the reference table for the values that come up most often.
Quarts to Gallons formula
To convert quarts to gallons, multiply by 0.25.
gal = qt × 0.25
Put another way, one quart is exactly 1/4 of a gallon.
Why this factor: the quart and the gallon are both defined against the liter, so dividing one definition by the other gives 0.25 directly. Both definitions are set out in full below.
To go the other way, divide by 0.25 — or use the Gallons to Quarts converter, which is the same calculation reversed.
Worked example
Given 8 qt, multiplying by 0.25 yields 2 gal.
8 qt × 0.25 = 2 gal
The converter above does this for any value you type, in either direction.
What is a quart?
A quart is a quarter of a US gallon — two pints.
Definition: Exactly one quarter of a US liquid gallon, so exactly 0.946352946 liter.
Where it is used: Milk, motor oil, stock and broth, and ice cream in the US.
Worth knowing: Close to a liter but about 5% smaller, which makes it an easy source of recipe error.
What is a gallon?
A US liquid gallon is the standard large-volume unit in the United States.
Definition: Defined as exactly 231 cubic inches, which works out to exactly 3.785411784 liters.
Where it is used: Fuel sales, milk and beverage containers, and paint in the US.
Worth knowing: The imperial gallon used in the UK and Canada is about 20% larger, at 4.54609 L — so 'miles per gallon' figures are not comparable between the two.
Quarts vs Gallons
The quart and the gallon belong to the same family of units, so converting between them is usually a matter of shifting a decimal point or applying a small whole-number factor.
Frequently asked questions
How many gallons are in a quart?
One quart equals 0.25 gallons.
What is the formula to convert quarts to gallons?
Multiply the number of quarts by 0.25. To reverse it, divide by 0.25 instead.
How do I convert gallons back to quarts?
Divide by 0.25, which is the same as multiplying by 4.
How many gallons are in 10 quarts?
10 qt works out to 2.5 gal.
Is there anything to watch out for with quarts?
Close to a liter but about 5% smaller, which makes it an easy source of recipe error.
How is the quart defined?
Exactly one quarter of a US liquid gallon, so exactly 0.946352946 liter.