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Physics

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Physics

Cylindrical Tank Volume Calculator.

Calculates the volume of a cylindrical tank in liters and cubic meters based on diameter and height.

Results update live as you type.
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Your inputs

How it works

  1. 1

    Measure the diameter of the tank in meters.

  2. 2

    Measure the height of the tank in meters.

  3. 3

    Divide the diameter by 2 to get the radius.

  4. 4

    Calculate volume using π × radius² × height.

pi * (diameter/2)^2 * height

Frequently asked questions

How do I convert the volume to liters?

Multiply the volume in cubic meters by 1000 to get liters.

What if my tank is partially filled?

Use the liquid height instead of the full height to get the volume of liquid.

Can I use this for horizontal tanks?

No, this formula assumes a vertical cylinder. Horizontal tanks require a different calculation.

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Results

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Volume

9.425m³

Volume in liters9,425L
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Estimate for general guidance only — verify important decisions with an appropriate professional.

How it works

Calculates the volume of a cylindrical tank in liters and cubic meters based on diameter and height.

  1. Measure the diameter of the tank in meters.
  2. Measure the height of the tank in meters.
  3. Divide the diameter by 2 to get the radius.
  4. Calculate volume using π × radius² × height.

Formulas

The math behind this calculator, written out so you can verify the result.

Cylinder volume

V = π × r² × h

The volume of a cylinder is the area of its circular base (πr²) times its height.

Example:

Input: r = 1 m, h = 3 m

Calculation: π × 1² × 3

Result: ≈ 9.42 m³

Real-world use cases

Where this calculation shows up in everyday life.

Water storage

Determine how much water a cylindrical tank can hold for residential or agricultural use.

Example: A 2 m diameter, 3 m tall tank holds about 9,425 liters.

Fuel tanks

Estimate fuel capacity for cylindrical storage tanks in industrial settings.

Example: A 4 m diameter, 5 m tall tank holds about 62,832 liters.

Aquarium sizing

Calculate the water volume for cylindrical aquariums to plan filtration and stocking.

Example: A 1 m diameter, 1 m tall tank holds about 785 liters.

Tips and common mistakes

Tips

  • Always measure the internal dimensions for accurate volume.
  • Use consistent units (meters) to get cubic meters directly.
  • For partially filled tanks, measure the liquid depth and use that as the height.
  • Remember that 1 cubic meter equals 1000 liters.

Common Mistakes to Avoid

  • Using diameter instead of radius in the formula.
  • Forgetting to convert measurements to the same unit.
  • Assuming the tank is perfectly cylindrical when it may have rounded ends.

Assumptions and limitations

  • Use the stated inputs and units.
  • Results are estimates for planning and education.
  • Check measurements and source data before making an important decision.