How many quarts in a gallon? The short answer is 4 quarts in 1 US gallon. Below is a quick chart, a simple formula, and everyday examples.

One large gallon jug beside four smaller quart jugs, showing that 4 quarts equal 1 gallon
Four quart jugs fill one gallon jug.

The Quick Answer

In the US customary system:

  • 1 gallon = 4 quarts
  • 1 quart = 2 pints
  • 1 pint = 2 cups
  • 1 cup = 8 fluid ounces

So one gallon also equals 8 pints, 16 cups, or 128 fluid ounces.

Quarts to Gallons Conversion Chart

Quarts Gallons Cups Pints Fluid Ounces
1 quart 0.25 gallon 4 cups 2 pints 32 fl oz
2 quarts 0.5 gallon 8 cups 4 pints 64 fl oz
3 quarts 0.75 gallon 12 cups 6 pints 96 fl oz
4 quarts 1 gallon 16 cups 8 pints 128 fl oz
5 quarts 1.25 gallons 20 cups 10 pints 160 fl oz
8 quarts 2 gallons 32 cups 16 pints 256 fl oz

Going the other way: 1 gallon equals 4 quarts, 2 gallons equal 8 quarts, and 5 gallons equal 20 quarts. For another common kitchen conversion, see our guide on how many ounces are in a pound.

How to Convert Quarts to Gallons

  • Quarts to gallons: divide by 4. Gallons = quarts ÷ 4.
  • Gallons to quarts: multiply by 4. Quarts = gallons × 4.

Examples: 6 quarts ÷ 4 = 1.5 gallons. 3 gallons × 4 = 12 quarts. 10 quarts ÷ 4 = 2.5 gallons.

One gallon holds 128 US fluid ounces. Our guide on how many ounces are in a gallon covers that conversion in detail.

Everyday Examples

  • Milk: A standard US milk jug holds 1 gallon; a smaller carton often holds 1 quart. Four quart cartons equal one gallon jug.
  • Paint: A quart covers a small project such as a door, while a gallon covers a whole room. The 4-to-1 rule helps you compare prices.
  • Recipes: Big-batch soups are often measured in quarts. A recipe calling for 2 quarts of broth needs half a gallon.
  • Cold brew: Drink batches are usually measured in gallons, while ingredients may be listed in quarts or cups. Our cold brew coffee guide shows how this works in a real recipe.

US Gallon vs. UK (Imperial) Gallon

The US and UK gallons are not the same size:

  • US gallon: 3.785 liters. A US quart is 32 US fluid ounces, about 0.946 liters.
  • UK imperial gallon: 4.546 liters. An imperial quart is 40 imperial fluid ounces, about 1.136 liters.

Both systems still use 4 quarts per gallon. Only the size of each quart changes. In the US, assume the US gallon unless a recipe says otherwise.

Frequently Asked Questions

How many quarts are in a gallon?

There are 4 quarts in 1 US gallon. The same count applies to the UK imperial gallon, but that gallon is larger: 4.546 liters versus 3.785 liters.

How many quarts are in half a gallon?

There are 2 quarts in half a gallon. That also equals 8 cups or 64 fluid ounces.

How many cups are in a quart?

There are 4 cups in 1 quart. Since a gallon holds 16 cups, dividing by 4 gives 4 cups per quart.

Is a quart bigger than a pint?

Yes. One quart equals 2 pints, so a quart is twice as large as a pint. A gallon holds 4 quarts or 8 pints.

The Bottom Line

Remember one number — 4 quarts = 1 gallon. Divide quarts by 4 to get gallons, multiply gallons by 4 to get quarts, and use the chart above for a fast, exact answer.