Concrete Tube Calculator

What is Concrete Tube Calculator?

Calculate concrete volume for Sonotube, round footing and hollow cylindrical forms.

How to use the calculator

1. Enter the project dimensions and quantities.
2. Choose the correct unit for each measurement.
3. Review the calculated result and waste allowance.
4. Check the estimate against project specifications.

Formula and calculation method

V = π ÷ 4 × (Outer diameter² − Inner diameter²) × Height × Quantity.

Worked example

Enter representative project measurements, apply the formula shown above, and compare the calculated quantity with the purchase quantity after waste is added.

Measurement and unit explanation

Use one unit per input and confirm whether the output is cubic meters, cubic feet, cubic yards, liters, kilograms, pounds, tonnes, square meters, or block count as applicable.

Accuracy and assumptions

The inner diameter must be smaller than the outer diameter. Check actual manufacturer dimensions rather than nominal sizes. Results are estimates and should be checked against actual site dimensions, material specifications, waste, joints, openings, moisture, and professional requirements.