Updated 28 July 2026 · Written by Sofia Romano
There are 16 cups in a US gallon. A gallon equals 4 quarts, 8 pints, or 128 fluid ounces. So half a gallon is 8 cups, and a quart, one quarter of a gallon, is 4 cups.
Quick Answer
1 gallon = 16 cups = 4 quarts = 8 pints = 128 fluid ounces.
How the Gallon Breaks Down
A gallon is the largest common US liquid measure. It splits into 4 quarts, each quart into 2 pints, and each pint into 2 cups, giving 16 cups total in a gallon.
Handy for Big Batches
This matters for large drinks, punch, iced tea or stock. To make a gallon of iced tea, you are making 16 cups, so scale your tea and sugar accordingly.
Quick Reference
| Unit | Cups |
|---|---|
| 1 gallon | 16 cups |
| 1/2 gallon | 8 cups |
| 1 quart | 4 cups |
| 1 pint | 2 cups |
Frequently Asked Questions
How many cups in half a gallon?
There are 8 cups in half a US gallon, since a full gallon holds 16 cups.
How many ounces in a gallon?
A US gallon holds 128 fluid ounces.
