Four cups make a quart
quarts = cups ÷ 4, cups = quarts × 4
In the US liquid system the ratio is exact: 4 cups = 1 quart. It sits inside a tidy chain — 1 gallon = 4 quarts = 8 pints = 16 cups = 128 fluid ounces — so every step up is a doubling or a factor of four. To divide by 4 in your head, halve the number twice.
Cups to quarts at a glance
| Cups | Quarts | Also is |
|---|---|---|
| 1 | 0.25 qt | ¼ quart |
| 2 | 0.5 qt | 1 pint |
| 4 | 1 qt | — |
| 6 | 1.5 qt | 1 qt + 1 pint |
| 8 | 2 qt | half gallon |
| 12 | 3 qt | — |
| 16 | 4 qt | 1 gallon |
Where the ratio changes
- US dry quart is bigger. A dry quart is 1,101 mL versus 946 mL for liquid, so it takes about 4.65 cups, not 4. For dry goods sold by dry measure, weighing in grams is more reliable.
- Imperial recipes. A UK cup is 284 mL, so 4 imperial cups make an imperial quart of 1,137 mL — larger than the US quart. The 4-to-1 ratio holds, but the absolute sizes don't.
- Fluid ounces, not weight ounces. A cup is 8 fluid ounces by volume; that equals 8 weight ounces only for water. A cup of flour weighs far less.
Common questions
How many cups are in a quart?
Four US cups make one US liquid quart, exactly. So 8 cups is 2 quarts and 2 cups is half a quart, which is one pint.
How do I convert cups to quarts?
Divide the number of cups by 4. For 6 cups: 6 divided by 4 is 1.5 quarts. To go the other way, multiply quarts by 4.
Is a US cup the same as a UK cup?
No. A US cup is 236.6 mL and a UK imperial cup is 284 mL, about 20 percent larger. A British recipe measured in cups will not match a US measuring cup.
