Concrete Calculators

Concrete math mistakes are expensive — a short pour means a cold joint, an over-order means a short-load fee. These calculators give you exact volumes, bag equivalents and current cost ranges for slabs, footings and more.

• Concrete Slab CalculatorCalculate concrete volume in cubic yards, the number of 80 lb or 60 lb bags, and estimated cost for any slab, patio or footing. Free and instant.
• Post Hole Concrete CalculatorCalculate how much concrete you need for fence posts, deck posts or mailboxes: volume per hole, total bags of 80 lb or 60 lb mix, and 2026 cost.