Avoid material waste and save money with our free Post Hole Concrete Calculator. Accurately determine the exact volume of concrete needed for fence posts, deck footings, or any cylindrical hole. Get precise calculations for your next landscaping or construction project.
Formula:
The volume of a cylindrical post hole is calculated using the formula for a cylinder:
V = π × (Diameter / 2)2 × Depth × Number of Holes
- V = Total concrete volume needed
- π ≈ 3.14159 (Pi)
- Diameter = Width of the post hole
- Depth = Depth of the post hole
- Number of Holes = Quantity of post holes
The result is then converted to cubic feet and common concrete bag sizes (60lb and 80lb).