Quarts to gallons
One qt equals 0.25 gal. Type any number and the answer appears as you type — the maths happens in your browser.
Result
The same value in every unit
| Unit | Value |
|---|
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Common values
| 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 |
| 15 qt | 3.75 gal |
| 20 qt | 5 gal |
| 25 qt | 6.25 gal |
| 50 qt | 12.5 gal |
| 100 qt | 25 gal |
| 500 qt | 125 gal |
| 1000 qt | 250 gal |
How to use
- Enter the number of quarts in the field.
- The result in gallons updates on every keystroke.
- Use the table below for the values people look up most often.
Formula and reverse conversion
The formula
To convert by hand: gal = qt ÷ 4. Going back the other way, one gal is 4 qt.
Where the odd number comes from
The factor is not a round number because the imperial units are defined through the metric ones by international agreement: an inch is exactly 25.4 mm and a pound is exactly 0.45359237 kg. Everything else follows from those definitions.
gal = qt ÷ 4
Frequently asked questions
How many gallons are in one quarts?
One qt is 0.25 gal.
How do I convert quarts to gallons?
Multiply by the factor: gal = qt ÷ 4.
Is the result exact?
The factors are the exact legal definitions, and up to ten significant digits are kept in the answer. Rounding happens only in the display.
How do I convert gallons back to quarts?
One gal is 4 qt — or open the reverse page linked below.