Calculate concrete for round columns, square columns, post holes, and piers.
| Diameter | Common Use | Volume/Column | 80lb Bags/Column |
|---|---|---|---|
| 6" | Mailbox, Light Post | 0.08 cu ft | 1 bag |
| 8" | Fence Post | 0.14 cu ft | 1 bag |
| 10" | Deck Post | 0.22 cu ft | 1 bag |
| 12" | Deck Pier, Porch | 0.31 cu ft | 1 bag |
| 16" | Large Deck, Pergola | 0.56 cu ft | 1 bag |
| 24" | Heavy Structure | 1.26 cu ft | 3 bags |
Our free column calculator helps you quickly estimate concrete and construction values with just a few inputs. Whether you're planning ahead or comparing options, this tool gives you instant, accurate results — no signup required.
Simply enter your values in the form above and click calculate. The tool will instantly process your data using industry-standard formulas and display detailed results. You can adjust any input to see how changes affect your outcome in real-time.
Understanding your column numbers is crucial for making informed decisions. Many people overpay or make costly mistakes simply because they don't run the numbers first. Our calculator helps you avoid common pitfalls by providing clear, actionable estimates based on your specific situation.
Yes, this calculator is completely free with no hidden fees or signup requirements. Use it as many times as you need.
Our calculator uses industry-standard formulas and current data to provide reliable estimates. However, actual results may vary based on individual circumstances and changing market conditions.
Yes, you can print your results directly from your browser or take a screenshot for your records. We recommend saving important calculations for future reference.
Use your results as a starting point for decision-making. Compare different scenarios by adjusting inputs, and consider consulting with a qualified professional for significant financial decisions.