Convert Gallons to Cups
1 gal = 16 cup. Enter any value below.
Converted to every unit
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Gallons to Cups formula
cup = gal × 16
A US gallon is 231 cubic inches, exactly 3.785411784 liters. A US cup is 8 US fluid ounces, about 236.59 mL.
Worked example
To convert 5 gal, multiply by 16: 5 gal × 16 = 80 cup.
Gallons to Cups conversion table
| Gallons | Cups |
|---|---|
| 1 gal | 16 cup |
| 2 gal | 32 cup |
| 3 gal | 48 cup |
| 4 gal | 64 cup |
| 5 gal | 80 cup |
| 6 gal | 96 cup |
| 7 gal | 112 cup |
| 8 gal | 128 cup |
| 9 gal | 144 cup |
| 10 gal | 160 cup |
| 12 gal | 192 cup |
| 15 gal | 240 cup |
| 20 gal | 320 cup |
| 25 gal | 400 cup |
| 30 gal | 480 cup |
| 40 gal | 640 cup |
| 50 gal | 800 cup |
| 75 gal | 1,200 cup |
| 100 gal | 1,600 cup |
| 250 gal | 4,000 cup |
| 500 gal | 8,000 cup |
| 1,000 gal | 16,000 cup |
Frequently asked questions
How many cups are in a gallon (us)?
1 gal equals 16 cup.
How do I convert gallons to cups?
Use the formula cup = gal × 16. For example, 5 gal = 80 cup.
Last reviewed: October 2026 · Uses exact, internationally defined conversion factors.