Concrete Column Calculator

Concrete Column and Pier Guide

Concrete columns are cylindrical pours used for deck footings, porch supports, and structural piers. The most common method uses cardboard Sonotube forms — the tube sits in a hole, you pour concrete in, and the tube stays in place as a permanent form below grade.

Column diameter depends on the load it carries. Deck footings typically use 12-inch Sonotubes. Porch columns and heavy structural piers use 16–24 inches. The footing depth must extend below the frost line — check your local building code for the required depth in your area.

The Bottom Line

Free concrete column calculator. Cubic yards and bags for round and square concrete columns and piers. Measure your project area carefully, add your waste factor, and use this calculator to get the material quantity before heading to the supply yard. Accurate estimates save money on bulk delivery charges and prevent mid-project shortages.