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Free Water Tank Capacity Calculator

How many litres your tank holds — rectangular or round, feet or metres.

Litres + cft Round or rectangular Nothing uploaded
See the letter and download ↓

Estimate for

Tank

Height of the water, not of the walls.

Everything you type stays in your browser — nothing is uploaded or saved.

Measure the inside of the tank.

Measure inside

Use the inside length, width or diameter and the depth the water actually reaches (below the overflow pipe) — not the outside size or the full wall height.

Kaise use karein

  1. Tanki ka andar ka naap bharein.
  2. Paani ki gehraai bharein.
  3. Litre aur kitne din chalega, dekhein.

Tip

Andar ka naap lein, bahar ka nahi.

Questions people ask

How do I find a tank’s capacity in litres?
Rectangular: length × width × water depth in metres × 1,000. Round: 3.1416 × diameter × diameter ÷ 4 × depth × 1,000. In feet, the page converts for you.
How many litres in 1 cubic foot?
About 28.32 litres (1 cu m = 1,000 L = 35.3147 cft).
Is my data uploaded?
No. Everything is worked out in your browser.

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Questions & problems

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