A US gallon is defined as exactly 4 US quarts — a simple, fixed kitchen-measurement conversion.
How it works
Multiplying gallons by 4 gives quarts; dividing quarts by 4 gives gallons back. Type into either field and the other updates instantly.
What this does not include
This does not include cups — for the quarts-to-cups step, use this site’s dedicated quarts-to-cups converter instead.
How to use this calculator
- Enter a value in either gallons or quarts — the other field fills in automatically.
Frequently asked questions
How many cups are in a gallon in total?
16 — a gallon is 4 quarts, each quart is 4 cups, so the full chain multiplies out to 16 cups per gallon.
Where is this conversion most commonly needed?
Recipe scaling and reading container sizes for beverages, paint, and other liquids.
Is a US gallon the same as an imperial gallon?
No — an imperial gallon is larger, so this conversion applies specifically to the US gallon definition.
