How Many Cups in a Gallon?
There are 16 cups in a US gallon and 18.62 cups in a UK (imperial) gallon. The US gallon is the most commonly used measurement in recipes and cooking.
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Formula
Answer: There are 16 cups in a US gallon and 18.62 cups in a UK (imperial) gallon. The US gallon is the most commonly used measurement in recipes and cooking.
Example
Question: How many cups in a gallon? Answer: There are 16 cups in a US gallon and 18.62 cups in a UK (imperial) gallon. The US gallon is the most commonly used measurement in recipes and cooking.
How to Use
- Read the direct answer at the top of the page
- Check the conversion table for common values
- Use the related converter for custom values
- Browse the FAQ for common follow-up questions
Frequently Asked Questions
How many cups are in a gallon of water?
There are exactly 16 US cups in 1 US gallon of water. This equals 3.785 liters or 128 fluid ounces.
Is a UK gallon the same as a US gallon?
No. A UK (imperial) gallon is 4.546 liters (about 18.62 cups), while a US gallon is 3.785 liters (16 cups). Always check which system your recipe uses.
How many cups are in a half gallon?
There are 8 cups in a half gallon (US). A half gallon equals 2 quarts or 1.893 liters.