Gallons to Cups Converter
Created by: Olivia Harper
Last updated:
A US gallon holds 16 cups, so multiply gallons by 16. Half a gallon is 8 cups, a quarter gallon (one quart) is 4 cups and 3/4 gallon is 12 cups. To convert cups to gallons, divide by 16. An imperial (UK) gallon is larger, at 19.2 US cups.
Gallons to Cups Converter
Conversion1 gal = 16 cups. Switch direction to convert us cups to us gallons.
Gallons to cups chart
cups = gallons × 16. gallons = cups ÷ 16.
| US gallons (gal) | US cups (cups) |
|---|---|
| 0.0625 gal | 1 cups |
| 0.125 gal | 2 cups |
| 0.25 gal | 4 cups |
| 0.375 gal | 6 cups |
| 0.5 gal | 8 cups |
| 0.625 gal | 10 cups |
| 0.75 gal | 12 cups |
| 1 gal | 16 cups |
| 1.25 gal | 20 cups |
| 1.5 gal | 24 cups |
| 2 gal | 32 cups |
| 2.5 gal | 40 cups |
| 3 gal | 48 cups |
| 4 gal | 64 cups |
| 5 gal | 80 cups |
| 6 gal | 96 cups |
| 10 gal | 160 cups |
| US cups (cups) | US gallons (gal) |
|---|---|
| 1 cups | 0.0625 gal |
| 2 cups | 0.125 gal |
| 3 cups | 0.1875 gal |
| 4 cups | 0.25 gal |
| 6 cups | 0.375 gal |
| 8 cups | 0.5 gal |
| 10 cups | 0.625 gal |
| 12 cups | 0.75 gal |
| 16 cups | 1 gal |
| 20 cups | 1.25 gal |
| 24 cups | 1.5 gal |
| 32 cups | 2 gal |
| 48 cups | 3 gal |
| 64 cups | 4 gal |
How to convert gallons to cups
cups = gallons × 16
gallons = cups ÷ 16
US liquid measures
| Unit | Cups | Fluid ounces | Milliliters |
|---|---|---|---|
| 1 gallon | 16 | 128 | 3,785 |
| 1/2 gallon | 8 | 64 | 1,893 |
| 1 quart | 4 | 32 | 946 |
| 1 pint | 2 | 16 | 473 |
| 1 cup | 1 | 8 | 237 |
These are US liquid measures. A US cup holds 8 fluid ounces (236.6 mL). Nutrition labels round it to 240 mL, and metric cups in Australia, Canada and New Zealand hold 250 mL.
Frequently Asked Questions
How many cups are in a gallon?
There are 16 cups in a US gallon. A gallon is 4 quarts, each quart is 2 pints, and each pint is 2 cups.
How many cups are in half a gallon?
Half a gallon is 8 cups. A quarter gallon (one quart) is 4 cups.
How many cups is 3/4 of a gallon?
3/4 of a gallon is 12 cups, or 3 quarts.
How do I convert cups to gallons?
Divide cups by 16. 24 cups ÷ 16 = 1.5 gallons, and 6 cups ÷ 16 = 0.375 gallon (3/8).
How many 8 oz cups are in a gallon?
Sixteen. A US cup is 8 fluid ounces and a gallon is 128 fluid ounces, so 128 ÷ 8 = 16. For drinking water, 16 eight-ounce glasses make a gallon.
Is a UK gallon the same number of cups?
No. An imperial (UK) gallon is 4.546 liters, about 20% larger than a US gallon. It holds 19.2 US cups, or 18.2 metric cups of 250 mL.
Sources and References
- NIST Handbook 44, Appendix C: General Tables of Units of Measurement. US liquid gallon = 4 quarts = 231 cubic inches = 3.785 411 784 liters.
- 21 CFR 101.9, Nutrition labeling of food. Label cup of 240 mL.