Gallons to Cups Converter
Convert volume between Gallons (US) and Cups instantly. Enter a value in either field below and the converter will update automatically — no need to press a button.
What is a Gallon?
A gallon is a unit of volume used mainly in the United States, commonly for measuring fuel, milk, and other liquids sold in bulk. This converter uses the US liquid gallon, which equals 16 US cups.
What is a Cup?
The cup is a smaller unit of volume commonly used in cooking and baking, especially in the United States. This converter uses the US customary cup, which equals 8 fluid ounces.
Gallons to Cups Formula
To convert Gallons to Cups, multiply the gallon value by 16:
To convert Cups back to Gallons, divide by 16:
Common Uses
- Scaling up recipes that use gallon-sized batches
- Calculating daily water intake in cups from a gallon jug
- Meal prep and large-batch cooking
- Beverage and drink dispenser planning for events
- Understanding grocery container sizes
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Frequently Asked Questions
How many cups are in a gallon?
There are exactly 16 cups in 1 US gallon.
How many cups are in half a gallon?
Half a gallon equals exactly 8 cups.
Is the gallons to cups conversion exact?
Yes. A US gallon is defined as exactly 16 cups (128 fluid ounces), so this conversion involves no rounding or approximation.