Use this sonotube calculator to determine the amount of concrete needed for round form tubes for your construction projects.

## Sonotube Concrete Calculator

### How to Use the Sonotube Calculator

To use this sonotube calculator, simply enter the diameter of the tube in inches and the height of the tube in feet. Once you have entered these values, click the “Calculate” button, and the calculator will compute the amount of concrete needed to fill the sonotube in cubic yards.

### How the Calculator Works

The calculator works by taking the radius (half the diameter) in inches and converting it into feet, then multiplying by the height (already in feet) to get the volume in cubic feet. Since concrete is typically ordered in cubic yards, the calculator finally converts cubic feet into cubic yards by dividing by 27 (since there are 27 cubic feet in a cubic yard).

### Limitations of the Calculator

The calculated result assumes that the sonotube is perfectly cylindrical and that the dimensions entered are precise. Real-world situations, such as tube deformities or variances in concrete settling, can cause deviations. Additionally, the calculator does not account for any waste or additional concrete that may be needed for the job. Always consider ordering slightly more concrete than calculated to account for these factors.