Gallons to Quarts Converter
Enter a volume in gallons to get the exact number of quarts, or flip to reverse mode and enter quarts to get gallons. Choose US liquid, US dry, or Imperial (UK) gallon type. The formula, a step-by-step breakdown, and a full conversion table are included below.
Formula
Worked example
3 US liquid gallons: 3 x 4 = 12 quarts. That is also 24 pints, 48 cups, or about 11.356 liters. Reverse: 12 quarts divided by 4 = 3 gallons.
How many quarts are in a gallon?
There are exactly 4 quarts in 1 US liquid gallon, and also exactly 4 Imperial quarts in 1 Imperial gallon. The ratio of 4 is the same for both systems, so the formula is simply: quarts = gallons x 4. The US dry gallon is different - it contains approximately 4.6546 US dry quarts, making it useful when dealing with dry goods like grain or produce. For everyday cooking and US household measurements, use the US liquid values.
US liquid, US dry, and Imperial gallons - which one do you need?
The US liquid gallon (3.785 liters) is what Americans use for fuel, milk, and most beverages. The US dry gallon (4.405 liters) appears in agricultural trade for dry goods and is rarely used in daily life. The Imperial gallon (4.546 liters) is the standard in the United Kingdom, Canada, and many Commonwealth countries - it is about 20% larger than a US liquid gallon, so substituting one for the other causes significant measurement errors. Always confirm which gallon type a recipe or specification uses before converting.
Gallons, quarts, pints, cups - the US liquid volume ladder
US liquid volume units follow a consistent doubling pattern. One gallon equals 4 quarts. One quart equals 2 pints. One pint equals 2 cups. One cup equals 8 fluid ounces. This means 1 gallon = 4 quarts = 8 pints = 16 cups = 128 fluid ounces. Knowing this chain makes it easy to convert between any two units: just multiply or divide by powers of 2. For example, 2.5 gallons = 10 quarts = 20 pints = 40 cups.
Practical examples - cooking, fuel, and more
In cooking, a standard large pot might hold 6 to 8 quarts (1.5 to 2 gallons). A typical US gas tank holds around 12 to 16 gallons (48 to 64 quarts). A half-gallon carton of milk contains 2 quarts. A one-quart mason jar holds 0.25 gallons. Paint is often sold by the quart (0.25 gallons) or gallon. Knowing the gallons-to-quarts ratio helps you scale recipes, estimate fuel usage, and compare product sizes at a glance.
Gallons to quarts conversion table (US liquid)
| Gallons (gal) | Quarts (qt) | Pints (pt) | Cups | Liters (L) |
|---|---|---|---|---|
| 0.25 | 1 | 2 | 4 | 0.946 |
| 0.5 | 2 | 4 | 8 | 1.893 |
| 1 | 4 | 8 | 16 | 3.785 |
| 2 | 8 | 16 | 32 | 7.571 |
| 3 | 12 | 24 | 48 | 11.356 |
| 4 | 16 | 32 | 64 | 15.142 |
| 5 | 20 | 40 | 80 | 18.927 |
| 6 | 24 | 48 | 96 | 22.712 |
| 8 | 32 | 64 | 128 | 30.283 |
| 10 | 40 | 80 | 160 | 37.854 |
| 15 | 60 | 120 | 240 | 56.781 |
| 20 | 80 | 160 | 320 | 75.708 |
Quick-reference values for US liquid gallons. 1 US liquid gallon = 4 quarts exactly.
Frequently asked questions
How many quarts are in a gallon?
There are exactly 4 quarts in 1 US liquid gallon, and exactly 4 Imperial quarts in 1 Imperial gallon. For US dry gallons, the equivalent is approximately 4.6546 US dry quarts.
How do I convert gallons to quarts?
Multiply the number of gallons by 4. For example, 3 gallons x 4 = 12 quarts. For US dry gallons, multiply by 4.6546 instead. The formula is: quarts = gallons x 4 (for US liquid or Imperial).
How do I convert quarts to gallons?
Divide the number of quarts by 4. For example, 20 quarts / 4 = 5 gallons. Use the "Quarts to Gallons (reverse)" mode in this calculator to do it automatically.
Is a quart the same in the US and the UK?
No. A US liquid quart is approximately 0.946 liters, while an Imperial quart (used in the UK) is approximately 1.137 liters. Both systems have 4 quarts per gallon, but the underlying gallon sizes differ - a US gallon is 3.785 liters and an Imperial gallon is 4.546 liters.
What is the difference between a US dry gallon and a US liquid gallon?
A US liquid gallon is 3.785 liters and is the standard for everyday liquids in the US. A US dry gallon is 4.405 liters (about 16% larger) and was historically used for dry goods like grain and produce. Most everyday use - including cooking, fuel, and beverages - uses the US liquid gallon.
How many cups are in a gallon?
There are 16 cups in 1 US liquid gallon. The ladder is: 1 gallon = 4 quarts = 8 pints = 16 cups = 128 fluid ounces.