How to convert quarts to gallons
To convert quarts to gallons, multiply by 0.25. Volume conversions help with recipes, fuel, beverages, aquariums and laboratory work. US customary units are used here.
Quart to Gallon conversion table
| Quart (qt) | Gallon (gal) |
|---|---|
| 0.1 qt | 0.025 gal |
| 0.5 qt | 0.125 gal |
| 1 qt | 0.25 gal |
| 2 qt | 0.5 gal |
| 3 qt | 0.75 gal |
| 4 qt | 1 gal |
| 5 qt | 1.25 gal |
| 10 qt | 2.5 gal |
| 20 qt | 5 gal |
| 25 qt | 6.25 gal |
| 50 qt | 12.5 gal |
| 100 qt | 25 gal |
| 500 qt | 125 gal |
| 1,000 qt | 250 gal |
About the units
Quart (qt)
A US liquid quart is 1/4 of a US gallon, exactly 0.946352946 liters.
Gallon (gal)
A US liquid gallon is defined as 231 cubic inches, exactly 3.785411784 liters.
How to use this converter
- Type the number of quarts (qt) in the input box.
- The result in gallons appears instantly — no button needed.
- See the same value in every other volume unit just below.
- Use “Swap units” to convert gallons back to quarts.
When you’ll use the quart to gallon conversion
Converting quarts to gallons comes up more often than you might expect — for example when filling an aquarium, pool or watering can, mixing cleaning solutions correctly, or scaling a recipe from cups to milliliters. Type your number once and you get the exact answer plus every related unit, so you don’t need to convert twice.
💡 The factor is exact and easy to remember: 1 qt = 0.25 gal.
Watch out for these mix-ups
- US gallons are smaller than UK (imperial) gallons — about 3.785 L vs 4.546 L.
- A US cup is 236.6 mL, but nutrition labels round it to 240 mL.
Tips for better results
- Double-check which system a unit belongs to (for example US vs UK gallons).
- Use the swap button to convert in the opposite direction instantly.
- Bookmark the conversions you use most — each pair has its own page.
Frequently asked questions
How many gallons are in one quart?
One quart equals 0.25 gallons. 0.25 is the exact factor used by this converter.
How do I convert quarts to gallons?
Multiply the value in quarts by 0.25. To go the other way, multiply gallons by 4.
What is 10 qt in gal?
10 qt = 2.5 gal. Also, 5 qt = 1.25 gal and 100 qt = 25 gal.
What is the difference between a quart and a gallon?
A US liquid quart is 1/4 of a US gallon, exactly 0.946352946 liters. A US liquid gallon is defined as 231 cubic inches, exactly 3.785411784 liters.
Is this tool free and private?
Yes — the Quart to Gallon is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.
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