How to convert US gallons to US cups
One US gallon equals 16 US cups. To convert, multiply the number of US gallons by 16:
Mental-math shortcut: One US gallon is exactly 16 cups: 4 quarts × 4 cups.
Example
Convert 1 US gallons to US cups: 1 gal × 16 = 16 cup.
Gallons to Cups conversion chart
| Gallons (gal) | Cups (cup) |
|---|---|
| 0.125 | 2 |
| 0.25 | 4 |
| 0.5 | 8 |
| 0.75 | 12 |
| 1 | 16 |
| 1.5 | 24 |
| 2 | 32 |
| 3 | 48 |
| 5 | 80 |
What is a US gallon?
The US gallon (gal) is 128 US fluid ounces, or exactly 3.785411784 liters. It is used for fuel, milk and paint in the United States. The imperial (UK) gallon is about 20% larger at 4.54609 liters; this converter uses the US gallon.
What is a US cup?
The US customary cup is 8 US fluid ounces, about 236.6 milliliters. US nutrition labels use a "legal cup" of exactly 240 mL, and Australia, Canada and many other countries use a metric cup of 250 mL. This converter uses the US customary cup.
Frequently asked questions
How many US cups is one US gallon?
One US gallon is 16 US cups.
How do I convert US gallons to US cups?
Multiply the value in US gallons by 16. For example, 1 gal × 16 = 16 cup.
What is 0.5 gal in US cups?
0.5 gal is 8 US cups.
How do I convert US cups to US gallons?
Multiply US cups by 0.0625 (or divide by 16).
How many cups are in a half gallon?
A half gallon is 8 cups (64 fl oz). A quarter gallon — one quart — is 4 cups.
Conversions use the internationally agreed definitions of each unit (for example, 1 inch = 2.54 cm exactly) and are rounded for display. Volume converters use US customary units unless stated otherwise.
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