Estimate piers, concrete, and layout in seconds
Use this pier calculator to estimate total piers, concrete bags, and cost for foundations or decks.
Enter structure size, pier spacing, and pier dimensions. Select bag size and price to calculate total bags and cost.
For a 16 ft × 12 ft deck with 6 ft pier spacing, 12-inch diameter piers, 60 lb bags at $5 each:
How many piers do I need?
Depends on spacing and structure size.
How is volume calculated?
Each pier is a cylinder; volume = π × radius² × depth.