**How many ounces are in a gallon of water?**

Before knowing the answer to this question, let us have a look at what is the system governing measurement. Metric system provides the basic unit of measure for the weight (mass), capacity (volume) and length (distance). It gives the unit grams, liters, and metre.

Kilolitre kl 1000

Hectolitre hl 100

Decilitre dale 10

Litre 1

Decilitre dl 1/10

Centilitre cl 1/100

Millilitre ml 1/1000

Liter is the base unit for capacity or volume and measures the amount of liquid that can be held in an object.

**Ounces**

An ounce is a measure of weight on the UK imperial and US systems of measure. It is 28.349 grams or we can say the weight of a bread slice.

**Difference between weight and mass**

These terms are used interchangeably, but they differ completely in meaning. Mass is the amount of a substance in an object and is denoted by ‘M’. Weight is the gravitational pull exerted on an object and denoted by ‘W’.

Now to answer the question that how many ounces are in a gallon of water.

The answer is simple

One gallon of US metric is 128 fluid ounce.

One gallon of UK imperial metric is 160 imperial fluid ounce

**How to convert gallon to ounce**

Conversion is also as simple. All that needs to be done is multiply the particular gallon value by the value of the ounce. For example, if its 5 gallons of water, then

5 gallons multiplied by 128 ounces

The answer is 640 gallons.

**Difference between US metrics and UK imperial Measurements**

Metric measurement and imperial measurement are the two main measurement systems in

The world. The United States did not adopt the newer versions of measurement but rather stayed with the older versions of measuring distance and mass in pounds, inches or feet. A table follows for further help in understanding the difference

1 mile | 1.6 kilometres |
---|---|

1 inch | 25 millimeter/2.54 centimetre |

3 feet | 1 metre |

1 kilogram | 2 pound |

1 pound | 454 gram |

100 pound | 7.14 stones |

**How many bottles of water in a gallon?**

With advent of water bottles now measuring seems convenient in terms of water bottles. Following chart will help in understanding the scale

Gallons | Ounces | Water bottles |
---|---|---|

1 | 8 | 16 |

2 | 12 | 21.33 |

3 | 16.9 | 22.72 |

4 | 20 | 25.6 |

5 | 24 | 26.66 |

6 | 33.8 | 22.72 |

SummaryWith the tables and formulas the conversion get easier. Plus understanding the differences among the measurements of US and UK system will also help out in finding the right kind of quantity.

**Frequently asked questions**

Do 64 ounces equal one gallon?

To make this measure a gallon should be simply divided by 128 as 128 ounces are equal to one gallon. To convert 64 ounces in gallons, 64 is divided by 128 which makes 0.5 so that’s half a gallon.

How many 16 ounces of water bottles make a gallon?

A gallon if converted to water bottles each containing 16 ounces of liquid shall make 8 water bottles.