Concrete Column Calculator
Single Column
Calculate concrete for a single cylindrical column
in
in
Multiple Columns
Calculate concrete for multiple identical columns
in
in
Formula
Volume (cu ft) = pi x (Diameter / 2)^2 x Height (all in feet); cu yd = cu ft / 27
Frequently Asked Questions
How do I calculate concrete for a round column?
Use the formula: Volume = pi x radius^2 x height. Convert all measurements to feet first, then divide cubic feet by 27 to get cubic yards.
What size sonotube do I need for a deck post?
Most residential deck posts use 8-inch or 10-inch sonotubes. Check local building codes for minimum footing size requirements based on your deck load.
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