This is very interesting Question indeed how many ounces in a gallon because it is all depends on which standard conversion you are using and looking. We have UK ( British Imperial standard ) and US ( United States customary Units)

For example in UK Imperial Standard **1 gallon is equal to 4.546 Liters of Fluid** and but the same USA liquid Standard 1** gallon is equal to 3.785 Liters of fluid ** which is lesser in Quantity.

## how many ounce in a gallon of a liquid or fluid?

Let us Take a deep Look into the USA Customary Breakdown on how many ounce in a gallon of a liquid or fluid.

**One Gallon is equal to 4 Quarts**

**4 Quarts is equal to 8 pints**

**8 Pints is equal to 16 Cups**

**16 cups is equal to 128 Fluid Ounces**

Below is the comparison Picture of Gallon and Ounce

So basically US Milli Liter per Ounce is Greater than the UK Milli Liter per ounce

1 USA Fluid Ounce = 29.5735 mL

1 UK Fluid Ounce = 28.4131 mL

One Gallon of USA Fluid is equal to 128 Ounces of USA Fluid

One Gallon of UK Fluid is equal to 160 Ounces of UK Fluid

## Simple Quick Conversion Table to Ounces from Gallons

Gallons (US) | Ounces (US) | Liters |
---|---|---|

1 | 128 | 3.785 |

2 | 256 | 7.571 |

3 | 384 | 11.356 |

4 | 512 | 15.142 |

5 | 640 | 18.927 |

6 | 768 | 22.712 |

7 | 896 | 26.498 |

8 | 1024 | 30.283 |

9 | 1152 | 34.069 |

10 | 1280 | 37.854 |

11 | 1408 | 41.64 |

12 | 1536 | 45.425 |

13 | 1664 | 49.21 |

14 | 1792 | 52.996 |

15 | 1920 | 56.781 |

Gallons (UK) | Ounces (UK) | Litres |
---|---|---|

1 | 160 | 4.546 |

2 | 320 | 9.092 |

3 | 480 | 13.638 |

4 | 640 | 18.184 |

5 | 800 | 22.73 |

6 | 960 | 27.277 |

7 | 1120 | 31.823 |

8 | 1280 | 36.369 |

9 | 1440 | 40.915 |

10 | 1600 | 45.461 |

11 | 1760 | 50.007 |

12 | 1920 | 54.553 |

13 | 2080 | 59.099 |

14 | 2240 | 63.645 |

15 | 2400 | 68.191 |

You can also check how many ounces in a pound : Here

There are More Discussion in public based on the Gallon and Ounce Check this Out:

Check out some Youtube on Gallon – Ounce Conversion