The answer of how many water bottles in a gallon depends on measurement systems. The reason is that different measurement system occupies different volumes of fluid in gallons. A gallon of water by definition is 128 fluid ounces in the United States. Water bottles may vary in size, but the total number of bottles making up 128 ounces can fit in a gallon.
Bottles Of Water in a Gallon
How many water bottles in a gallon is a very tricky question. On the off chance that we need to know what number of jugs of water are in a gallon we first need to realize that there are 120 ounces of water in gallon.
For example, if the water bottle is 16 ounces in size, then 8 of these make up a gallon. If the water bottle is 32 ounces, then only 4 of these make up a gallon. A 1 liter bottle of water is approximately 33.8 ounces, so approximately 3.8 of these bottles make up a gallon.
The graph below show to us what number of jugs we have to expend with the end goal to drink one gallon of water for every day.
With that learning we would now be able to calculate the quantity of containers expected to make one gallon.
Liquid Ounces Per Gallon (Chart)
1 gallon of water = 15 bottles at 8 oz every (1 glass)
1 gallon of water = 7.5 jugs at 16 oz every (1 half quart)
1 gallon of water = 7.1 containers at 16.9 oz each
1 gallon of water = 4.61 containers at 26 oz each
1 gallon of water = 3.75 jugs at 32 oz every (1 quart)
1 gallon of water = 3.55 jugs at 33.8 oz every (1 liter)
Summary
The number of water bottles in a gallon depends on the size of the water bottle. A gallon is 128 fluid ounces; we must divide 128 by the number of ounces in the water bottle to get the answer.
Relationship with different units:
Both the US fluid and majestic gallon are partitioned into four quarts (quarter gallons), which thus are separated into two pints. These pints are isolated into two glasses (however the magnificent container is once in a while utilized now), which thusly are partitioned into two (gills are additionally once in a while utilized). Along these lines a gallon is equivalent to four quarts, eight pints, sixteen containers or thirtytwo gills. The magnificent gill is additionally separated into five liquid ounces, while the US gill is partitioned into four liquid ounces. There fore a majestic liquid ounce is 1/20 of a royal 16 ounces or 1/160 of a magnificent gallon, while a US liquid ounce is 1/16 of a US half quart or 1/128 of a US gallon.
Conversion of other units of volume to the US gallon
The conversion of other units of volume to the US gallon are in the table given below.
Other Units  Conversion 

1 ounce  0.0078125 US Gallon 
1 US quart  0.25 US gallon or (1/4) th of US gallon 
1 US tablespoon  0.00390625 US gallon or (1/256) th of US gallon 
1 US pint  0.128 US gallon or (1/8) th of US gallon 
1 Imperial quart  0.300237 US gallon 
1 Imperial pint  0.150119 US gallon 
1 Cubic Foot  7.4805324 US gallon 
Summary
The supreme gallon, quart, half quart, container, and gill are roughly 20% bigger than their US partners. The majestic liquid ounce, is just 4% littler than the US liquid ounce and they are frequently utilized conversely.
How many Ounces are in a gallon?
Here, we will discuss the complete detail of how many ounces are in a gallon. There are 128 ounces in a US gallon. There are different types of gallon i.e. US and UK gallons. Each type of gallon refers to a different system of measurements. Hence US and UK gallons have different capacities. The number of ounces in 2, 5, and 10 gallon jugs can be calculated as below.
1 US gallon = 128 ounces
1 ounce = 1/128
1 ounce = 0.00781 gallon
1 US gallon = 3785.4 ml
1 ml = 1/3785.4
1 ml = 0.0002642 US gallon (i)
1 UK gallon = 4546.1 ml
1 ml = 1/4546.1
1 ml = 0.0002200 UK gallon (ii)
By equating (i) and (ii)
0.00022 UK gallon = 0.0002642 US gallon
Therefore,
1 UK gallon = 1.201 US gallon
Hence,
1 UK gallon h = 1.201*128 ounces
1 UK gallon h = 153.73 ounces
How many ounces are in a half gallon?
It is necessary over here to know about how many ounces are in a half gallon. There is 64 oz in half a gallon. Always keep in your mind that ounces are denoted by symbol “oz” whereas fluid ounces are denoting by symbol “fl oz.”
here is a measurement of cup in a gallon:
 1 cup is equal to the 8 ounces
 2 cups are similar to the 16 ounces
 4 cups are comparable to the 32 ounces
 8 cups are identical to the 64 ounces that make the half gallon
 16 cups are equal to the 128 ounces that make 1 gallon
Summary
In the simple words, we can say that 16 cups of water make up to the one gallon.
How many fluid ounces in a gallon?
How Many Fluid Ounces are there in a Gallon depends upon which system we are operating as well as where are you in the world. Because of different countries have adopted different standards units to measure the mass & Volume.
1gallon measures as 128 ounces in the United States system,
1 Gallon = 128 fl oz (US)
Meanwhile a gallon is equal to 160 ounces in the UK Imperial measurement system.
1 Gallon = 160 fl oz (UK)
How many liters in a gallon?
A gallon is a measure of volume primarily used in the United States but also commonly used in many other English speaking countries. Most other countries use “liters”, the metric unit of measure for volume.
One should know the exact answer of how many liters in a gallon. There are 0.26417205235815 US Gallons in 1 Liter. To convert from Liters to US Gallons, multiply your figure by 0.26417205235815 (or divide by 3.785411784) .
It is important to remember that the US gallon and UK gallon are different sizes.
Summary
The US gallon is used in the United States and is equal to exactly 231 cubic inches or 3.785411784 liters.
Gallons to liter Formula for conversion
From US gallon
Liters = No. of gallons × 3.7854
From UK gallon
Liters = No. of gallons × 4.5461
Liters to gallon Formula for conversion
US gallon = (No. of liters) / 3.7854
UK gallon = (No. of liters) / 4.5461
Summary
Liter is a basic unit of volume in metric system. One liter of water weighs one kilogram.
How many 16.9 oz bottles make Gallon?
16.9 oz is equal to 500ml for water. As we know, a US gallon has a total of 128 oz. So 128/16.9 = 7.57. Therefore, a total of 7.57 water bottles of 16.9 oz make up a US gallon.
Coming to UK gallon, it is a total of 160 oz. As 160/16.9 = 9.46. Therefore, a total of 9.46 water bottles of 16.9 oz make up a UK gallon.
Frequently Asked Questions
Here are some frequently asked questions by people related to the topic of how many water bottles in a gallon.

How many bottle water should you drink a day?
There are many different opinions on how much water you should be drinking every day. Health authorities commonly recommend eight 8ounce glasses, which equals about 2 liters, or half a gallon. This is called the 8×8 rule and is very easy to remember.

Does 64 ounces equal 1 gallon?
Fluid Ounces to Gallons Conversion
1 US fluid ounce is equal to 0.0078125 gallon. To convert fluid oz to gallon, multiply the fluid oz value by 0.0078125 or divide by 128. For example, to calculate how many gallons is 64 fl oz of water, multiply 64 by 0.0078125, that makes 0.5 gallon is 64 fl oz of water.

How much does it cost to fill a 1000 gallon pool?
It costs between $4 and $10 per 1000 gallons of water on average that is used in your home. When it comes to filling a swimming pool after installation, it could take just a few thousand to over 20,0000 gallons of water depending on your pool size.

Is it healthy to drink a gallon of water a day?
Drinking a gallon of water per day may work for some people but could be harmful for others. Although rare, drinking too much water too fast can cause sodium levels in your blood to drop too low, causing a dangerous condition called hyponatremia.

Is 32 oz of water a day enough?
The Institute of Medicine (IOM) recommends that men drink at least 101 ounces of water per day, which is a little under 13 cups. They say women should drink at least 74 ounces, which is a little over 9 cups. Still, the answer to exactly how much water you should drink is not so simple.
Conclusion
Converting the volume according to the local standard sometime becomes necessary for us to do. People outside the U.S. are most familiar with the metric system. But it is always good to know the way to convert the volume following the measurement of the other popular widely accepted standards.