Quarts to Gallons (qt to gal)
A US liquid gallon is 231 cubic inches (3.785411784 L, NIST SP 811) and holds exactly 4 quarts, so divide quarts by 4. Ten quarts is 2.5 gallons.
Formula
US gallons = US quarts ÷ 4
Example: 4 US quarts = 1 US gallons.
Quarts to Gallons chart
| US quarts | US gallons |
|---|---|
| 1 | 0.25 |
| 2 | 0.5 |
| 3 | 0.75 |
| 4 | 1 |
| 5 | 1.25 |
| 6 | 1.5 |
| 8 | 2 |
| 10 | 2.5 |
| 12 | 3 |
| 16 | 4 |
| 20 | 5 |
| 24 | 6 |
| 32 | 8 |
| 48 | 12 |
| 64 | 16 |
Good to know
Motor oil: most car engines take 4–6 quarts, so a 5-quart jug is 1.25 gallons. Check the owner's manual — it lists capacity in quarts and liters.
Paint: a gallon covers roughly 350–400 sq ft per coat. Two quarts (half a gallon) is enough for a small bathroom; four quarts cost more than one gallon can.
Pots and coolers are rated in quarts: an 8-quart stockpot is 2 gallons, a 48-quart cooler is 12 gallons. UK gallons are 4.546 L and hold 4 imperial quarts.
Frequently asked questions
How many quarts are in a gallon?
4 US quarts in a US gallon.
How many gallons is 6 quarts?
6 qt is 1.5 gallons.
How many gallons is 3 quarts?
3 qt is 0.75 gallons (3/4 gal).
How many gallons is a 48-quart cooler?
48 qt is 12 gallons.