Since one gallon is equal to 16 cups, you can use this simple formula to convert:

### How Many Cups are in a Gallon?

There are **16** cups in a gallon, which is why we use this value in the formula above.

1 gal = 16 c

Gallons and cups are both units used to measure volume. Keep reading to learn more about each unit of measure.

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## Gallons

The US liquid gallon is a unit of fluid volume equal to four quarts, eight pints, or sixteen cups.<1> The US liquid gallon should not be confused with the US dry gallon or the imperial gallon, which are different units of measure.

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The gallon is a US customary unit of volume. Gallons can be abbreviated as *gal*; for example, 1 gallon can be written as 1 gal.

## Cups

The cup is a unit of volume equal to 16 tablespoons or 8 fluid ounces. The cup should not be confused with the metric cup or the teacup, which are different units of volume. One cup is equal to just under 236.6 milliliters, but in nutrition labeling, one cup is equal to 240 milliliters.<2>

The cup is a US customary unit of volume. Cups can be abbreviated as *c*, and are also sometimes abbreviated as *C*. For example, 1 cup can be written as 1 c or 1 C.

## Gallon to Cup Conversion Table

Gallon measurements converted to cups Gallons Cups1 gal | 16 c |

2 gal | 32 c |

3 gal | 48 c |

4 gal | 64 c |

5 gal | 80 c |

6 gal | 96 c |

7 gal | 112 c |

8 gal | 128 c |

9 gal | 144 c |

10 gal | 160 c |

11 gal | 176 c |

12 gal | 192 c |

13 gal | 208 c |

14 gal | 224 c |

15 gal | 240 c |

16 gal | 256 c |

17 gal | 272 c |

18 gal | 288 c |

19 gal | 304 c |

20 gal | 320 c |

21 gal | 336 c |

22 gal | 352 c |

23 gal | 368 c |

24 gal | 384 c |

25 gal | 400 c |

26 gal | 416 c |

27 gal | 432 c |

28 gal | 448 c |

29 gal | 464 c |

30 gal | 480 c |

31 gal | 496 c |

32 gal | 512 c |

33 gal | 528 c |

34 gal | 544 c |

35 gal | 560 c |

36 gal | 576 c |

37 gal | 592 c |

38 gal | 608 c |

39 gal | 624 c |

40 gal | 640 c |