Gallons to Cups (gal to cup) Converter & Formula
1 US gallon equals 16 cups — multiply the number of gallons by 16 to convert to cups. This is a clean whole-number conversion that comes up constantly in the kitchen. ByteTools applies the exact factor as you type.
The formula
To convert gallons to cups, multiply by 16:
cup = gal × 16
For example, 2 gallons × 16 = 32 cups. To reverse it, divide cups by 16 (or multiply by 0.0625).
Conversion table
| Gallons (gal) | Cups (cup) |
|---|---|
| 1 | 16 |
| 2 | 32 |
| 5 | 80 |
| 10 | 160 |
| 25 | 400 |
| 50 | 800 |
| 100 | 1600 |
| 500 | 8000 |
| 1000 | 16000 |
How to convert online
- Type the number of gallons into the first box.
- Read the cups result instantly in the second box.
- Type a cup value instead to convert back to gallons — it works both ways.
Use the Gallon to Cup Converter — free and instant in your browser.
Where this conversion is used
Gallons-to-cup conversions are everyday work in cooking, batch recipes, drink and punch mixing, and any time you need to scale a large volume down to measuring-cup amounts. Because 1 gallon is exactly 16 cups, doubling or halving recipes stays simple.
FAQ
How many cups are in a gallon?
One US gallon equals 16 cups. So 2 gallons is 32 cups and 5 gallons is 80 cups.
What is the formula to convert gallons to cups?
Multiply gallons by 16: cup = gal × 16. The converter applies this exact factor automatically.
How do I convert cups back to gallons?
Divide by 16, or multiply cups by 0.0625. For example, 8 cups = 0.5 gallon.
Is the conversion exact?
Yes. In US customary units, one gallon is defined as exactly 16 cups, so the factor is precise.
Related converters
- Cup to Gallon Converter
- Gallon to Liter Converter
- Gallon to Milliliter Converter
- Gallon to Pint Converter
Built by ByteVancer
ByteTools is a free product of ByteVancer, a software and web development studio. If you need a custom web app, calculator or internal tool built for your business, ByteVancer can help — explore our services and get in touch.
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