Concrete Calculator
Calculate concrete volume for slabs, footings, columns and custom pours, with cubic yards, cubic feet, waste allowance and 80 lb bag estimates.
Ready-mix suppliers usually quote concrete in cubic yards. Bag estimates below use an 80 lb bag yield of about 0.6 cubic feet.
Calculate concrete yards and bags
Concrete-calculator SERPs expect shapes first, then cubic yards and bags. Enter slab, footing, column or known-volume dimensions, add waste, and use the result for early ordering conversations.
Use cubic yards for ready-mix ordering.
Bag counts are rounded up because concrete is sold in whole bags.
Ordering notes
- Add waste for subgrade variation, spillage, pump hose loss and rounding.
- For structural work, concrete strength, slump, air content, reinforcement and curing must follow the project specification.
- Ready-mix minimum loads, short-load fees and delivery windows vary by supplier.
Frequently Asked Questions
Sources and References
- Concrete CalculatorCalculator.net
- Concrete CalculatorQUIKRETE
- Concrete CalculatorInch Calculator
- How to Order Ready Mixed ConcreteNational Ready Mixed Concrete Association
Calculations are based on the listed reference sources. Links open in a new tab.
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