# How to Calculate The Capacity of Water Tank And Construct Any Shape of Tank For A Specific Capacity

## simple calculations

Generally water is stored either in a cylindrical tank or in a square tank. We can easily find out the capacity of water storage tank of any size in liters. For eg. if you want to find out the capacity of a square water tank measuring 1m length, 1m breadth, 1m height, first convert meter to cm. As the formula to find out the volume of cube is a^3 we can get answer as 1000,000 cc (1 m = 100 cm)

1000 cc is 1 liter

__Therefore above said cubic tank can hold 1000 liters__.

By this same method we can easily calculate the capacity of tanks in various sizes.

## How to Construct Any Type of a Water Tank for a Specific Capacity

We can easily construct any type of water tank like cylindrical, cubical and rectangular for a specific capacity. For instance, if you want to get measurements of tank in any shape to store 5000 liters, you will feel easy with following examples. But, you need to count only inner measurements of tanks to get accurate answers.

**Let us try to find out the side of a cubical tank to store 5000 liters**.

Formula for the volume of a cube = a^3, a = the side of cubical tank

Specific Capacity = 5000 liters (i.e.) 5000,000 cc

Therefore a^3 = 5000,000 cc

The side 'a' = (5000,000)^1/3 = 170.99 cm

**Similarly we can find out the measurements of a rectangular tank holding 5000 liters**

Formula for the volume of a rectangular tank is l*b*h

Say the length is 1.5 times breadth and the height is equal to breadth

Now the volume of the tank can be written as 1.5*b*b*b = 1.5*b^3

Specific Capacity = 5000 liters (i.e.) 5000,000 cc

Therefore 1.5*b^3 = 5000,000 cc

Now 'b' will come as [5000,000/1.5]^[1/3] = 149.38 cm

Now we can easily get length, breadth and height of the tank as follows, l = 224.07 cm, b = 149.38 cm, h = 149.38 cm which can hold 5000 liters of water

**The same way we can easily design a cylindrical tank to store 5000 liters**

Formula for the volume of a cylinder is 3.14*r^2*h

Say height is 2 times radius of the tank

Now the volume of the tank can be written as 3.14*r^2*2*r = 6.28*r^3

Specific Capacity = 5000 liters (i.e.) 5000,000 cc

Therefore 6.28*r^3 = 5000,000 cc

Now 'r' will come as [5000,000/6.28]^[1/3] = 92.68 cm

Now we can easily get height and radius of the cylindrical tank holding 5000 liters as follows, h = 185.36 cm and r = 92.68 cm

You can also try to find out the measurements of tanks for different capacities.

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## Comments 41 comments

nice info thanks

hi i have 6000x3000x3000 water tank i want to know the volume of total please reply

Hi,

I just like to know how to calculate the capacity for 200000 ltrs in rectangular tank. kindly reply please

Nice stuff !! This helped me .. Thank you very much !

Hi..

if i need to take out the capicity of cylindrical tank then which formula i shud use??

and 2nd thing.. for eg if i have to design a square tank for 5000 ltrs water then which formula i have to use??

Thnx Buddy..

which field u r related to?

if i need to ask any formulae related to mechanical field..

can u help me?

Thnx again

thnx for the help.. and can u tell me water flow mainaining formula?? eg i have to get 2 ltr per second water from over head tank to ground tank..and same flow for ground tank to over head tank..

I have an underground tank and want to calculate that how much liters of water it contains. So, please tell me how can I get to know its capacity. For your help I have taken measurement as breadth=4 inch length=5 inch and height=6 inch. Please reply on id as dheeraj142@yahoo.co.in

8x6x15 sized tank=? liters

Ratna What Is CC?

Good and useful..

Dear Ratna can u help me up with this how can i calculate

volume of an elliptical cylinder in litters where i am having all the three sides i.e length of tank is L-289.5cm, width of tank is W-193cm, height of tank is H-134.6cm

Dear sir Wat is CFM

hello, i want to make 20tons capacity cylindrical tank. so what is the formula and dimensions, radius and height.

thanxxxxx a ton mam.... !!

Dear Ratnaveera, I want to construct 100000 Liters water tank for our nursery can you suggest me dimensions for the tank and design?

Here is a easy way to figure it out! http://volumeformula.org/cylinder.html

i used your method to calculate the height of my cylindrical tank if i want to calculate the head how would i go about this i got 15 feet for the height and the capacity of the tank is approximately 20000gallons

Mam, I want to calculate the capacity of concrete bucket having upper diameter 700mm, lower diameter 400mm & height 550mm. please tell me as soon as possible.

hello ma'am...i need to design an overhead steel square water tank of size 2m x 2m x 2m at a height of 3mts...

if i have 0.02cc cartridge then how much fluid will pass through that cartridge. pressure variation can be effect on volume of fluid

How do i know the pump on and pump off level of an existing hydro tank and level on level off of a water storage tank

dear sir i have 27000ltr capcity how to find size of rectangular tank

I need to known the tank capacity for my fire pump which is 120gmp. can any help me regarding this

i am a welder based in tank construction i just need a simple formular for calculating the volume of a tank.kindly send it to my email ayadiariyo@yahoo.com

thanks for your reply

Hi, Ratna ..

i am working in fiber glass company as draughtsman. And i want to know TANK calculations each and everything in simple way our metric in meters and letters if can mail send a mail to me sureshgiri.gs@gmail.com.

So i hope u can help me out of this.

Hi, Ratna,

Im Shams, our house is under construction. we prefer to use ceramic disc shower mixers in the bath rooms. I wish to know the ideal height for an Overhead Tank from the roof height of +680Lvl. or please advise us for an economical solution to get the right pressure in all mixers especially in first floor.

shahana.shams@gmail.com

Dear i want to calculate the cost of water tank e.g.

its capacity is 50000 gallons i want to know that if i sell a 20000 gallons the remaining 30000 gallons know i need a per cost of that anyone please help me thanks

I want calculate the thickness of body plate to store the 5000 ltr. water in tank

hello sir,

how r you,

i want to calculate thickness of of h.d.p.e plastics tank as per capacity. my tank capacity is 60 kl = 60,000 litre, so how much wall thickness get for this tank, tank size: approx 4 mtr dia x approx 4.8 mtr heigh.

but its thickness = ? , i dont know

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