Footing Concrete
Calculate concrete for round piers or footings.
About Footing Concrete
Each round footing is a cylinder, so its volume is pi times the squared radius times the height. Multiplying by the count gives the total concrete in cubic yards. Round piers for decks and posts need their own volume check so you order the right concrete and dig to the right depth.
Formula
Footing Concrete
Volume = pi x (diameter/2)^2 x height
- footing
- A round concrete pier base
Worked example
With the default values below, Footing Concrete returns Concrete Needed of 0.23. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Diameterminimum 0.1 in
- 12 in
- Heightminimum 0 in
- 24 in
- Number of footingsminimum 1
- 4
Results
- Per Footing
- 1.57 cu ft
- Total Volume
- 6.3 cu ft
- Concrete Needed
- 0.23 cu yd
Step by step
- 1Values used
- 2Footing Concrete
- 3Concrete Needed= 0.23 cu yd
- 4Per Footing= 1.57 cu ft
- 5Total Volume= 6.3 cu ft
Assumptions and limits
- The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How is Footing Concrete calculated?
Volume = pi x (diameter/2)^2 x height Each round footing is a cylinder, so its volume is pi times the squared radius times the height. Multiplying by the count gives the total concrete in cubic yards.
Why does Footing Concrete matter?
Round piers for decks and posts need their own volume check so you order the right concrete and dig to the right depth.
What values do I need to enter?
This calculator takes 3 inputs: Diameter, Height, Number of footings. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.