Concrete & masonry
Post Hole Concrete Calculator
Your measurements : outside diameter, post diameter, depth / thickness. Your estimate : volume, litres, cubic feet.
How the calculation works
Post Hole Concrete Calculator
π / 4 × (Outside diameter² − Post diameter²) × Depth / thickness × Number of elements × (1 + Waste allowance / 100)Before you order
- Use the coverage, yield and dimensions printed on your product. Waste allowance is adjustable; real cuts and site conditions may change the order.
- Planning estimate only. This is not a structural design, a safety approval or a local code check.
Worked example
- Outside diameter
- 0.3 m
- Post diameter
- 0.1 m
- Depth / thickness
- 0.8 m
- Number of elements
- 1
- Waste allowance
- 10 %
Volume 0.06 m³
Litres 55.29 L