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Water tank calculator
Capacity of a rectangular or round tank in litres, and how long it lasts.
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About Water tank calculator
Compute the capacity of a rectangular or round tank in litres from its dimensions, and estimate how long the water lasts at your daily use. A rectangular tank in metres gives cubic metres, and one cubic metre holds 1,000 litres. Round tanks use pi times radius squared times height.
How to use Water tank calculator
- Enter your numbers above.
- The result updates instantly as you type.
- Change any value to compare different cases.
Why use this tool?
- Private: everything happens in your browser. Nothing you enter is uploaded.
- Free, with no sign-up, no watermark and no limit on how often you use it.
- Works on phones, tablets and computers: Android, iPhone, Windows, Mac and Linux. Nothing to install.
- Available in 10 languages.
Also known as
Frequently asked questions
How many litres are in one cubic metre?
1,000 litres. A tank 2 m long, 1 m wide and 1 m high holds 2,000 litres when full.
Is Water tank calculator free?
Yes. Water tank calculator on Toolipedia is free to use, with no sign-up and no watermark.
Is it safe to use?
Yes. Everything is worked out in your browser, and nothing you enter is sent to our server.
Does it work on my phone?
Yes. It works in any modern browser on Android and iPhone, as well as on tablets and computers. There's nothing to install.
Do I need an account?
No. Just open the page and use the tool. There's no sign-up and no email needed.