conversions
How Many Quarts in a Gallon
Last updated: May 31, 2026
Written by Blake Boege
A quarts-in-a-gallon page converts volumes between quarts and gallons. The word quart is derived from 'quarter', meaning one quarter of a gallon. Therefore, a quart is exactly one-quarter of a gallon, which means 1 gallon equals 4 quarts in both the US Customary and British Imperial systems, though the absolute volume of a quart differs between them.
Learn the relationship between quarts and gallons. Convert gallons to quarts and vice versa, and explore the volume differences between US and Imperial liquid systems.
Quick Answer
Determine how many quarts are in a gallon (4 quarts in a gallon) and convert between these volume units using our quick converter.
How Many Quarts in a Gallon?
There are exactly 4 quarts in 1 gallon.
This ratio is constant in both the US Customary measurement system and the British Imperial measurement system.
Liquid Measurement System
Formula: 1 Gallon = 4 Quarts (in both US and UK Imperial systems)
Gallons to Quarts Table
| Gallons (gal) | Quarts (qt) |
|---|---|
| 1/4 gal | 1 qt |
| 1/2 gal | 2 qt |
| 3/4 gal | 3 qt |
| 1 gal | 4 qt |
| 2 gal | 8 qt |
| 3 gal | 12 qt |
| 5 gal | 20 qt |
| 10 gal | 40 qt |
Examples
1 Gallon
4 Quarts
5 Gallons
20 Quarts
10 Gallons
40 Quarts
How it works
The word quart comes from the Latin word quartus (meaning one quarter). Therefore, a quart is exactly one-quarter of a gallon:
The Formula
1 Gallon = 4 Quarts
To find quarts, multiply gallons by 4. To find gallons, divide quarts by 4.
Liquid Quarts vs. Dry Quarts vs. Imperial Quarts
While the ratio is always 4 quarts per gallon, the actual volume of a quart depends on the measurement system being used:
- US Liquid Quart: Used for liquid measurements in the United States, equivalent to 32 US fluid ounces or approximately 946.35 milliliters.
- US Dry Quart: Used for dry agricultural goods in the US, equivalent to approximately 1,101.22 milliliters.
- Imperial Quart: Historically used in the UK and Commonwealth, equivalent to 40 Imperial fluid ounces or approximately 1,136.52 milliliters.
Visualizing the Liquid Measurements Hierarchy
In the standard US Customary liquid system, the division flows from largest to smallest:
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Frequently asked questions
There are exactly 20 quarts in 5 gallons (5 gallons × 4 quarts per gallon).
No. Because the Imperial gallon is larger than the US gallon, the quarts also differ in size. A US liquid quart is approximately 946.35 mL, whereas an Imperial quart (used in the UK and Canada historically) is larger, at approximately 1,136.52 mL.
There are 2 pints in a quart (in both the US and Imperial systems).
There are 4 cups in a standard US quart, and 4 Imperial cups in an Imperial quart.
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