Construction & Materials
Concrete Pier Calculator
Estimate cubic yards and 80 lb bags for cylindrical concrete piers or footings.
Your inputs
Change any value to update the result instantly.
Concrete needed
0.7679 yd³
Volume per pier
3.14 ft³
80 lb bags required
35 bags
60 lb bags required
47 bags
Formula and working
volume = π × (diameter/2)² × depth × count
- 1
Collect the inputs
Pier diameter = 12 in; Pier depth = 4 ft; Number of piers = 6; Waste allowance = 10 %
- 2
Apply the formula
volume = π × (diameter/2)² × depth × count
- 3
Result
Concrete needed = 0.7679 yd³
Frequently asked questions
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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