Concrete Column Calculator
Estimate concrete volume for round Sonotube columns or square pier forms. Results in cubic yards and bags.
Frequently Asked Questions
How much concrete does a Sonotube hold?
A 10-inch diameter × 48-inch tall Sonotube holds about 0.08 cubic yards (2.2 cubic feet).
What thickness is a concrete column?
Residential columns are typically 8–12 inches square or 10–12 inches diameter round.
How many bags for a deck post footing?
A 12-inch × 48-inch post footing needs about 4 bags (80 lb) of pre-mix concrete.
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