JLJosh Liljenquist

Bidirectional unit converter

Cups to Gallons Converter

Convert U.S. customary cups to U.S. liquid gallons, or gallons to cups, using the exact 16-to-1 relationship.

Result in
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Enter a value and select Convert.

Exact relationship and formula

1 U.S. liquid gallon = 16 U.S. customary cups exactly. Gallons = cups ÷ 16.

Reverse mode applies the inverse relationship from the same exact definition.

Worked example

1 cup = 0.0625 gal; 8 cups = 0.5 gal; 16 cups = 1 gal.

This calculator uses U.S. customary cups and U.S. liquid gallons. It does not mix Imperial gallons, U.S. dry gallons, or metric cups.

Common u.s. cups reference values

U.S. cupsConversion
1 US cups0.0625 US gal
2 US cups0.125 US gal
4 US cups0.25 US gal
8 US cups0.5 US gal
16 US cups1 US gal
32 US cups2 US gal
64 US cups4 US gal

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