How To Calculate Water Tank Capacity

by | Nov 24, 2023

How to calculate water tank capacity.

Installing a water tank in your home is very important to ensure a constant water supply 24/7. Storing water is essential, but storing the correct amount is equally important. Most people purchase an oversized water tank and regret wasting money and space later.

In this article, we will provide the easiest way to calculate tank capacity to help you buy the required tank for your home. We will also help you find out the optimum water tank capacity for your home.

How to Determine the Capacity of a Water Tank?

To assess the capacity of your water tank, you can perform straightforward calculations. Here’s a step-by-step guide on how to compute the capacity in liters using this formula:

Measure the length, width, and height of your water tank in feet.

Convert these measurements to centimeters, as the standard unit for volume is cubic centimeters (cm³), and 1 liter is equivalent to 1000 cm³.

Calculate the volume in cubic centimeters.

Convert the volume from cubic centimeters to liters by dividing by 1000.

You can use the following formula for this calculation:

Capacity (in liters) = Volume (in cm³) / 1000

As an example, let’s say you have a rectangular water tank with the following dimensions:

Length = 5 feet

Width = 3 feet

Height = 4 feet

First, convert the dimensions to centimeters:

Length = 5 feet × 30.48 cm/foot = 152.4 cm

Width = 3 feet × 30.48 cm/foot = 91.44 cm

Height = 4 feet × 30.48 cm/foot = 121.92 cm

Next, calculate the volume:

Volume = 152.4 cm × 91.44 cm × 121.92 cm = 1696840.4864 cm³

Now, to convert the volume to liters:

Capacity = 1696840.4864 cm³ / 1000 = 1696.8404864 liters

So, the water tank’s capacity is approximately 1696.84 liters. By following these steps, you can easily determine the capacity of your water tank.

What Should Be The Capacity Of Your Water Tank?

Many cities may not have a constant municipal water supply for their residents to use in real time. A water tank with an appropriate capacity must address this issue.

Water tanks come in a variety of capacities for serving residential as well as industrial needs. If you install a large tank without due consideration, it can prove to be really problematic. Pick the water tank with a capacity that suits your household.

Number of PeopleStorage Tank Capacity
215,000-30,000 litres
440,000-60,000 litres
8>75,000 litres

Frequently Asked Questions

1. How do you calculate water tank capacity in Litres?

To calculate the capacity of a water tank in liters, you should first take out its volume in cubic centimeters and then divide it by 1000:
Length (cm) × Width (cm) × Height (cm)
Capacity (in liters) = Volume (in cm³) / 1000

2. What is the size of 1 lakh Litre water tank?

A 1 lakh litre water tank has dimensions of 20000 L x 3450 W, 2750 mm. The length of the tank is 29.43 ft.

3. How do I calculate 1000 Litre water tank?

A 1000 litre water tank has dimensions of 1m X 1m X 1m. 

4. What size is a 2000 litre water tank?

Typically, a 2000-litre round water tank is around 1300mm to 1500mm in diameter and approximately 1500mm to 1700mm in height.

5. Why Should I Buy A Water Tank?

Many cities may not have a constant municipal water supply for their residents to use in real time. A water tank with an appropriate capacity must address this issue.

Bhuwan Bhatia

Bhuwan Bhatia

Bhuwan Bhatia, an engineering graduate with a diverse background, has been passionate about entrepreneurship since age 13. Founder of edtech startup Technoshaala, Bhuwan now focuses on leading his innovative water management startup, FLOTAA, in Kanpur to create sustainable solutions.
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