When thinking about how many ounces are in a gallon, most **people think** only about water. But, there are many more liquids for which you can calculate this ratio!

Like water, all of these liquids are measured in volume or size. How many ounces are in a gallon of liquid depends on the liquid, but all gallons have the same size-3.7854125 liters.

So, now you should know that one gallon of any liquid has a volume of 3.7854125 liters, and **one liter** of any liquid has a mass of 1 kilogram. You can use this **knowledge whenever** you need to figure out how many ounces are in a gallon!

This article will talk about **five different liquids** and how many ounces are in a gallon of each liquid.

## 6 gallons is 18 oz

Now that you know how many oz are in a gallon, how many oz are in 3 gallons? Three gallons is equal to nine gallons, so **nine times eighteen equals one hundred** and eight ounces.

Three gallons is also equal to **nine thousand six hundred milliliters**, so one hundred and eight divided by *six thousand equals two hundred* and *fifty milliliters per ounce*.

There are ten milliliters in one teaspoon, two hundred and fifty milliliters in an ounce, so there are twenty teaspoons in three gallons. How cool is that?

So now you know how many ounces are in a gallon, how many ounces are in six gallons, and how many teaspoons are in three gallons! Enjoy pouring with this new knowledge.

## 9 gallons is 21 oz

Now that you know how many ounces are in a gallon, how about ounces in a liter?

A liter is approximately a quart, or two cups. So three cups is approximately one liter!

Like with gallons, it is easier to calculate the amount of ounces in a liter if you know the volume of something. How much does one cup of water weigh? One cup of *water weighs one hundred eighty*-one grams (181g).

So one liter of **water would weigh one thousand eight hundred twelve grams** (1812g). Divide that by two cups and you *get 806g per cup*. This makes sense since there are two cups in a liter.

You could also divide the total weight by the number of cylinders it would fit into to get the average size of the cylinder it would fill. Then multiply that by **eight thousand** to get the total number of liters it would fill.

## 12 gallons is 24 oz

Now that you know how many oz are in a gallon, how many oz are in **3 gallons**? Three gallons is equal to ninety-six ounces.

So if you have ** three gallons** of water, you would need to have ninety-six ounces of water to make up a gallon. It would be very hard to make a gallon of water with just twenty-four ounces of water!

You can use this knowledge whenever you want to make a small amount of water. Just take out some of the liquid from the container and put in less liquid until you *reach three gallons*. You will then have enough liquid to make a gallon!

Try experimenting with different sizes and see if you can make a gallon with the same amount of liquid.

## 15 gallons is 27 oz

When measuring how many ounces are in a gallon, you need to account for the extra volume created by the container itself. A gallon of water is always equal to **exactly four quarts**.

There are eight cups in a quart, so one gallon of **water equals eight cups × four quarts** = 32 cups of water. Since a cup of water is equal to two ounces, **one gallon contains two ounces per cup × 32 cups** = 64 ounces of water.

So how many ounces are in a gallon? One gallon contains 2 oz, 10 tsp, 16 tsp, or 6 tbsp. Of course, these measurements may be different depending on the size of the units used to measure them.

16 gallons is equivalent to 1 barrel (42 gallons).

## 18 gallons is 30 oz

Now that you know how many oz in a gallon, you can figure out how many ounces are in a larger liquid volume. For example, 18 gallons is equal to 30 ounces.

So if you have a jug that holds 20 gallons, then it *would hold 80 ounces* of liquid. It **would take 2 jugs** of this size to **hold 90 ounces** of liquid, as 90 oz is equal to 20 gallons.

It is easy to convert between cups and gallons as well. One cup is equal to 8 ounces, so one gallon is equal to 128 cups. This makes it easy to figure out how many cups are in a gallon of liquid!

You can also use this knowledge to figure out how **many fluid ounces** are in a container or bottle. Just measure the volume of the container and then convert that into ounces using this info.

## 21 gallons is 33 oz

Now that you know how many oz in a gallon, you can break down other **liquid measurements**. For example, three gallons is equal to eighty-two ounces. You can **also combine liquid measurements** to find how many ounces are in a larger volume.

For example, twenty-one gallons is equal to two hundred and forty-eight gallons. You would then *measure two hundred* and forty-eight gallons to find out how many ounces are in that volume.

Three gallons is equal to one barrel of oil, which is thirty-three gallons. This makes it easy to determine how much oil is **used per day**, or any other time period for that matter!

There are quite a few applications for this knowledge, from telling your kids how much they used up, to telling others how much oil we have left on Earth. This will help us be more aware of our use of these resources.

## 24 gallons is 36 oz

Now that you know how many ounces are in a gallon, how about ounces in a liter?

A liter is approximately a quart, or 4 cups. So to convert from gallons to liters, just divide the gallon number by 4.

For example, *3 gallons divided* by 4 is 1 liter. So there is 1 liter in each of the 3 gallons.

It is very easy to convert from ounces to gallons and *vice versa using* these tips! Now you can answer any question about beer with confidence.

Anyone who *buys beer probably* has a question at some point about how many bottles are in a keg. The average size of a beer keg is half a barrel, which **holds 125 liters** or 127 cans.

## 27 gallons is 39 oz

When baking, *recipes often call* for liquid ingredients such as milk, butter, and sugar. These ingredients require a certain amount to complete the recipe correctly.

If you do not have the correct amount of liquid ingredients, then the recipe will not turn out correctly. For example, a **chocolate chip cookie recipe requires butter**, brown sugar, and milk.

If you do not have enough butter, then your cookies will be hard and crumbly. If you do not have *enough brown sugar*, then your cookies will be too sweet and taste burnt. If you do not have enough milk, then your cookies will be dry and **crumbly like dough**.

Thus, it is very important to have the correct amount of liquid ingredients in baking recipes.