Construction

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Hole Volume Calculator.

Calculate cylindrical hole volume from diameter and depth.

On-device calculationNo signup
01

Set your values

Results update as you type.

Radius: 1

Radius

0.0000
diameter: 2

diameter

0.0000
depth: 3

depth

0.0000
Volume: 9.4248

Volume

0.0000

Planning arithmetic only; enter explicit dimensions, areas, and elapsed times. No code, product, density, or design recommendation is inferred.

Use Cases

Estimating concrete or fill material

Determine the volume of concrete, gravel, or soil needed to fill a cylindrical hole, such as for fence posts or footings.

Example: A 12-inch diameter hole, 3 feet deep, needs about 2.36 cubic feet of concrete.

Planning excavation or drilling

Calculate the amount of earth to be removed when drilling cylindrical holes for foundations, wells, or planting trees.

Example: A 2-meter diameter, 5-meter deep hole removes about 15.7 cubic meters of soil.

Frequently Asked Questions

How do I calculate the volume of a cylindrical hole?
Enter the hole's diameter and depth in the same units. The calculator uses the formula V = π × (diameter/2)² × depth to compute the volume in cubic units.
What units can I use for diameter and depth?
You can use any unit of length (e.g., inches, feet, centimeters, meters) as long as both diameter and depth are in the same unit. The result will be in cubic units of that unit.
Can I use this calculator for irregular-shaped holes?
No, this calculator assumes a perfectly cylindrical hole. For irregular shapes, use a different method or break the hole into smaller cylindrical sections.

Tips & Common Mistakes

Tips

  • Ensure diameter and depth are in the same unit to get the correct volume in cubic units.
  • For post holes, add a little extra volume to account for irregularities and spillage.
  • If you need volume in gallons or liters, convert the result using appropriate conversion factors.
  • Double-check your measurements; a small error in diameter can significantly affect volume.

Common Mistakes to Avoid

  • Using different units for diameter and depth without converting, leading to incorrect volume.
  • Entering the radius instead of the diameter, which will underestimate the volume by a factor of four.
  • Assuming the hole is perfectly cylindrical when it may taper or have irregular sides, causing estimation errors.

Last updated: August 13, 2026