How to convert gallons to quarts
To convert gallons to quarts, multiply by 4. Volume conversions help with recipes, fuel, beverages, aquariums and laboratory work. US customary units are used here.
Gallon to Quart conversion table
| Gallon (gal) | Quart (qt) |
|---|---|
| 0.1 gal | 0.4 qt |
| 0.5 gal | 2 qt |
| 1 gal | 4 qt |
| 2 gal | 8 qt |
| 3 gal | 12 qt |
| 4 gal | 16 qt |
| 5 gal | 20 qt |
| 10 gal | 40 qt |
| 20 gal | 80 qt |
| 25 gal | 100 qt |
| 50 gal | 200 qt |
| 100 gal | 400 qt |
| 500 gal | 2,000 qt |
| 1,000 gal | 4,000 qt |
About the units
Gallon (gal)
A US liquid gallon is defined as 231 cubic inches, exactly 3.785411784 liters.
Quart (qt)
A US liquid quart is 1/4 of a US gallon, exactly 0.946352946 liters.
How to use this converter
- Type the number of gallons (gal) in the input box.
- The result in quarts appears instantly — no button needed.
- See the same value in every other volume unit just below.
- Use “Swap units” to convert quarts back to gallons.
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 quarts are in one gallon?
One gallon equals 4 quarts. 4 is the exact factor used by this converter.
How do I convert gallons to quarts?
Multiply the value in gallons by 4. To go the other way, multiply quarts by 0.25.
What is 10 gal in qt?
10 gal = 40 qt. Also, 5 gal = 20 qt and 100 gal = 400 qt.
What is the difference between a gallon and a quart?
A US liquid gallon is defined as 231 cubic inches, exactly 3.785411784 liters. A US liquid quart is 1/4 of a US gallon, exactly 0.946352946 liters.
Is this tool free and private?
Yes — the Gallon to Quart 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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