As a hot tub owner, you might wonder about water consumption. If you have ever wondered how many gallons of water the hot tub can have, then the answer is that it depends on the shape, size, depth and the number of people that can fit in the hot tub.

In the case of a small hot tub which can fit about 2-3 persons, it can hold about 150- 300 gallons of water. Large hot tubs for 6-8 persons can hold about 320-675 gallons or even more quantity of water. This article will direct you in finding the hot tub gallon size in the most effective manner.

## The Gallons Of Water In Your Hot Tub- An Useful Information

How many gallons of water that your bathtub can hold is a useful piece of information. Firstly you will get to know the final weight of your hot tub and this can help in you find the proper location for setting up one. You can also get to know the amount of energy needed to heat up the water and thus the cost associated in the process. The quantity of chemicals needed in the sanitization process can also be driven by the amount of water it can hold.

## Finding Out The Exact Numbers

If you own a hot tub, then the easiest possible way to know how many gallons of water the hot tub can hold is by checking the hot tub manufacturer’s manual. And if you misplaced it or if it is lost, then you can also call up the supplier from where you bought the hot tub. They can help you if you provide them with the model number of your hot tub. You can also use the internet and search on the hot tub manufacturer’s website regarding the same. Now if you are somebody who is looking as to how to manually calculate the gallons of water that the hot tub can hold, then we also have that one explained for you.

## Manual Calculation Of The Exact Numbers

There are two methods by which you can have an idea about the quantity of water that the hot tub can hold. One is based on the time required to fill the hot tub completely and the other is from the dimensions (length, width and depth) of the hot tub itself. The former one is easier involving less calculations and you can get with this method even if you are not so good in mathematics. The latter involves more calculations.

## Calculation Using Time Taken To Fill The Hot Tub

For this method, you need to empty the bath tub. You can perform this calculation at times when you are planning maintenance. So what you need is the empty bath tub, hose, a standard jug (1 gallon size for reference), timer and calculator (you may be having both apps in your mobile phone).

- Set the timer and turn on the hose to the maximum and fill the hot tub.
- Stop the timer when the hot tub is completely filled with water. Note the time taken to fill the tub (say A). It might take some time.
- Now take the one gallon size jug. Set the timer and turn on the hose to the maximum and fill the jug.
- Stop the timer when the jug fills completely. Note the time taken to fill the jug (say B).

Now we need to get into some calculations. For the purpose I am taking an example and assigning some numbers to the previously said values A and B. Let A be 1 hour 10 minutes (time taken to fill the hot tub). Let B be 20s (time taken to fill the 1 gallon jug). Now we need to have both the time measurements in the same unit so as to proceed further and do the calculations and this basic mathematics knowledge. So we need to convert 1 hour 10 minutes into seconds.

A= 1 hour 10 minutes= 60 minutes+ 10 minutes (to convert hour into minutes, multiply by 60)

So, A= 70 minutes

To convert minutes into seconds again multiply by 60.

Now A = 70X60= 4200 seconds

We have already assumed B to be 20 seconds.

To get the gallons of water in your hot tub, you just need to divide A by B. So in this case,

Gallons of water in the hot tub= 4200/20=210 gallons.

## Calculation using dimension of the hot tub

Now in this method, you need a tape to measure the external dimensions of the hot tub and a calculator to do the calculations. The method of measurement is different in the case of square/rectangular hot tub and round hot tub.

**Square/ Rectangular hot tub**- Use your measuring tape and measure the length, width and the depth of your hot tub. Note the measurements in inches.
- Multiply the length by the width by the depth this will result in some cubic inches.
- Divide the result by 1728 so as to convert cubic inches to cubic feet.
- If your hot tub has seats, then multiply the above result by 2.4. If there are no seats, then multiply by 4.8. The result will give you the water that your hot tub can hold in gallons.
**Round hot tub**- Measure the diameter (width across the center) and the depth of the hot tub. Note the measurements in inches.
- Now you need to multiply the diameter by the diameter by the depth.
- Divide the result by 1728 so as obtain capacity in cubic feet.
- If your hot tub has seats, then multiply the above result by 2.4. If there are no seats, then multiply by 4.8. This will give you the hot tub capacity in gallons.

So by using some calculations you can arrive at the capacity of your hot tub. This gives an idea about the weight of the hot tub when filled. This will also give an idea about the energy requirements for heating the tub. You also get an idea about the quantity of chemical needed in the cleaning process.

As a hot tub owner, you might wonder about the water consumption. If you have ever wondered how many gallons of water that the hot tub can have, then the answer is that it depends on the shape, size, depth and the number of people that can fit in the hot tub.

In case of a small hot tub which can fit about 2-3 persons, it can hold about 150- 300 gallons of water. Large hot tubs for 6-8 persons can hold about 320-675 gallons or even more quantity of water. This article will direct you in finding the hot tub gallon size in the most effective manner.

## The Gallons Of Water In Your Hot Tub- An Useful Information

How many gallons of water that your bath tub can hold is an useful piece of information. Firstly you will get to know the final weight of your hot tub and this can help in you finding the proper location for setting up one. You can also get to know the amount of energy needed to heat up the water and thus the cost associated in the process. The quantity of chemicals needed in the sanitization process can also be driven from the amount of water it can hold.

## Finding Out The Exact Numbers

If you own a hot tub, then the easiest possible way to know how many gallons of water the hot tub can hold is by checking the hot tub manufacturer’s manual. And if you misplaced it or if it is lost, then you can also call up the supplier from where you bought the hot tub. They can help you if you provide them with the model number of your hot tub. You can also use the internet and search on the hot tub manufacturer’s website regarding the same. Now if you are somebody who is looking as to how to manually calculate the gallons of water that the hot tub can hold, then we also have that one explained for you.

## Manual Calculation Of The Exact Numbers

There are two methods by which you can have an idea about the quantity of water that the hot tub can hold. One is based on the time required to fill the hot tub completely and the other is from the dimensions (length, width and the depth) of the hot tub itself. The former one is easier involving less calculations and you can get with this method even if you are not so good in mathematics. The latter involves more calculations.

## Calculation Using Time Taken To Fill The Hot Tub

For this method, you need to empty the bathtub. You can perform this calculation at times when you are planning maintenance. So what you need is the empty bathtub, hose, a standard jug (1-gallon size for reference), timer and calculator (you may be having both apps in your mobile phone).

- Set the timer and turn on the hose to the maximum and fill the hot tub.
- Stop the timer when the hot tub is completely filled with water. Note the time taken to fill the tub (say A). It might take some time.
- Now take the one gallon size jug. Set the timer and turn on the hose to the maximum and fill the jug.
- Stop the timer when the jug fills completely. Note the time taken to fill the jug (say B).

Now we need to get into some calculations. For this purpose I am taking an example and assigning some numbers to the previously said values A and B. Let A be 1 hour 10 minutes (time taken to fill the hot tub). Let B be 20s (time taken to fill the 1 gallon jug). Now we need to have both the time measurements in the same unit so as to proceed further and do the calculations and this basic mathematics knowledge. So we need to convert 1 hour 10 minutes into seconds.

A= 1 hour 10 minutes= 60 minutes+ 10 minutes (to convert hour into minutes, multiply by 60)

So, A= 70 minutes

To convert minutes into seconds again multiply by 60.

Now A = 70X60= 4200 seconds

We have already assumed B to be 20 seconds.

To get the gallons of water in your hot tub, you just need to divide A by B. So in this case,

Gallons of water in the hot tub= 4200/20=210 gallons.

## Calculation using dimension of the hot tub

Now in this method, you need a tape to measure the external dimensions of the hot tub and a calculator to do the calculations. The method of measurement is different in the case of square/rectangular hot tub and round hot tub.

**Square/ Rectangular hot tub**- Use your measuring tape and measure the length, width and the depth of your hot tub. Note the measurements in inches.
- Multiply the length by the width by the depth this will result in some cubic inches.
- Divide the result by 1728 so as to convert cubic inches to cubic feet.
- If your hot tub has seats, then multiply the above result by 2.4. If there are no seats, then multiply by 4.8. The result will give you the water that your hot tub can hold in gallons.
**Round hot tub**- Measure the diameter (width across the center) and the depth of the hot tub. Note the measurements in inches.
- Now you need to multiply the diameter by the diameter by the depth.
- Divide the result by 1728 so as obtain capacity in cubic feet.
- If your hot tub has seats, then multiply the above result by 2.4. If there are no seats, then multiply by 4.8. This will give you the hot tub capacity in gallons.

So by using some calculations you can arrive at the capacity of your hot tub. This gives an idea about the weight of the hot tub when filled. This will also give an idea about the energy requirements for heating the tub. You also get an idea about the quantity of chemical needed in the cleaning process.