How to convert gallons to cups
Gallons and Cups both measure volume, so converting is a single multiplication. One gal equals 16.000008 cup, so you multiply your gallons value by 16.000008.
Formula: cups = gallons × 16.000008. For example, 10 gal = 160.000085 cup.
Gallons to Cups conversion table
| Gallons (gal) | Cups (cup) |
|---|---|
| 1 | 16.000008 |
| 2 | 32.000017 |
| 5 | 80.000042 |
| 10 | 160.000085 |
| 25 | 400.000211 |
| 50 | 800.000423 |
| 100 | 1,600.000845 |
| 1,000 | 16,000.008454 |
Gallons and Cups explained
Gallons (gal): A US liquid measure of about 3.785 litres (four quarts).
Cups (cup): A US cooking measure of about 236.6 ml.
When you'd convert gallons to cups
You'll convert gallons to cups whenever a measurement is given in one unit but you need it in the other — comparing gallons and cups figures across regions, following a recipe or spec, or double-checking a number. Because 1 gal is exactly 16.000008 cup, the result is precise every time.
Frequently asked questions
How many cups are in a gallon?
One gal equals 16.000008 cup. Multiply your gallons figure by 16.000008 to get cups.
What is the formula to convert gallons to cups?
cups = gallons × 16.000008. The factor 16.000008 is exact.
What is 2 gallons in cups?
2 gal = 32.000017 cup. You can enter any value in the converter above to get an instant result.
Is this Gallons to Cups converter accurate?
Yes. It uses the standard conversion factor (1 gal = 16.000008 cup) defined by NIST Handbook 44 / US customary liquid measures, so results are exact to several decimal places.