How many US quarts are in one US gallon?
One US gallon contains exactly 4 US quarts.
Convert gallon (US) (gal (US)) to quart (US) (qt (US)) instantly.
Formula
value × 4
| Sample | Converted |
|---|---|
| 1 gal (US) | 4 qt (US) |
| 5 gal (US) | 20 qt (US) |
| 10 gal (US) | 40 qt (US) |
| 100 gal (US) | 400 qt (US) |
| 1,000 gal (US) | 4,000 qt (US) |
Use this page when a volume in US gallons needs to be converted into US quarts. This is a direct US customary liquid conversion used for cooking, food service, household liquids, automotive fluids, containers, and equipment capacity.
US gallons and US quarts are part of the same customary liquid system.
This conversion is exact and easy to verify.
The quart result will always be four times the gallon value.
Quarts are useful when a gallon amount needs to be divided into smaller containers.
For larger storage volumes, gallons may remain clearer than quarts.
This page uses US liquid quarts, not imperial quarts.
Gallons are useful for larger liquid quantities, while quarts are useful for smaller containers and portions.
This conversion is common in cooking, automotive fluids, household products, and food service.
It keeps the measurement within the same US liquid system while changing the scale.
Quarts are often easier when a gallon amount is being divided or packaged.
A half gallon is 2 quarts, and a quarter gallon is 1 quart.
That simple relationship makes quarts convenient for planning container counts.
1 US gal should equal exactly 4 US qt.
0.25 US gal should equal exactly 1 US qt.
If the result is 8 per gallon, it has been converted to pints, not quarts.
Definition: A US liquid gallon is a US customary volume unit equal to 4 US quarts.
History/Origin: US gallons are used for liquid capacity in fuel, water, containers, appliances, and consumer products.
Current use: gal_us is used for fuel, water tanks, pools, aquariums, irrigation, beverages, appliances, and liquid storage.
Definition: A US liquid quart is one quarter of a US liquid gallon.
History/Origin: US quarts are common in food, beverages, household liquids, automotive fluids, and container labels.
Current use: qt_us is used for cooking, food service, containers, automotive fluids, household liquids, beverages, and product packaging.
| gallon (US) [gal (US)] | quart (US) [qt (US)] |
|---|---|
| 0.01 gal (US) | 0.04 qt (US) |
| 0.1 gal (US) | 0.4 qt (US) |
| 1 gal (US) | 4 qt (US) |
| 2 gal (US) | 8 qt (US) |
| 5 gal (US) | 20 qt (US) |
| 10 gal (US) | 40 qt (US) |
| 20 gal (US) | 80 qt (US) |
| 50 gal (US) | 200 qt (US) |
| 100 gal (US) | 400 qt (US) |
1 gal (US) = 4 qt (US)
1 qt (US) = 0.25 gal (US)
Formula: value × 4
Example: 15 gal (US) = 60 qt (US)
Precision note: Use the exact factor of 4 US quarts per US gallon. Preserve fractional gallon values before multiplying.
One US gallon contains exactly 4 US quarts.
2.5 US gallons is exactly 10 US quarts.
Yes. The relationship between US gallons and US quarts is exact.