Water Tank Capacity Calculator – Litres

Calculate the capacity of a rectangular or round water tank in litres and the time a motor takes to fill it.

Checking figures on paper takes time and invites small mistakes. Water Tank Capacity Calculator takes tank ka shape, maap ki unit, lambai, and chaudai and gives an instant result you can recalculate with different values.

How to Find Tank Capacity

Choose the tank shape, enter the measurements and unit, and optionally the motor flow to see the filling time.

How many litres in 1 cubic metre?

1000 litres.

How is a round tank calculated?

Volume = π × radius² × height.

Is the result usable water?

It is the full capacity; usable water is a little less.

How is filling time found?

Capacity divided by the motor flow in litres per minute.

About this calculator

Calculate the capacity of a rectangular or round water tank in litres and the time a motor takes to fill it. Water Tank Capacity Calculator reduces the chance of small mistakes in long calculations, works with the numbers you already have on hand, and makes it easy to compare two or three scenarios side by side.

How to use it

Enter tank ka shape, maap ki unit, and lambai, then adjust the options so they match what you need, then click “Capacity Nikalein”, and finally read the result and try other numbers to compare.

Worked scenario

Before making a decision you try Water Tank Capacity Calculator with two different sets of numbers and compare the answers.

Things to keep in mind

The answer is only as good as the numbers you enter, so double-check units and decimals. Use the result as a guide and confirm important figures with an official or professional source.

Water Tank Capacity Calculator works inside your browser, so what you type or select here is not sent to our server for processing.

You might also try Pipe Water Volume & Flow Calculator, Age Calculator, and CFT Calculator.

Further reading from trusted sources

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Last updated: 08 Nov 2026 • 100% free • Mobile friendly

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