Home › Concrete Calculator
Concrete Calculator
Free concrete calculator. Estimate cubic yards and bags of concrete needed for slabs, footings, and columns.
Frequently Asked Questions
What is the concrete calculator used for?
The concrete calculator estimates how much concrete — by cubic yard or by bag — is needed for a slab, footing, column, or set of stairs. It applies a typical waste factor so an order does not come up short.
Who is the concrete calculator for?
Contractors, masons, landscapers, and DIY homeowners pouring patios, sidewalks, footings, or fence-post holes. Suppliers and ready-mix vendors also use it to confirm a customer's order quantity.
What problems can a concrete calculator solve?
It prevents both expensive over-orders and worse mid-pour shortages by translating dimensions into the actual volume needed. It also accounts for the small but routine spillage and over-excavation that real jobs experience.
What questions can a concrete calculator answer?
It answers questions like "How many cubic yards do I need for a 16 by 12 foot slab at 4 inches thick?", "How many 80-pound bags will fill twelve 12-inch fence-post holes?", and "How much extra concrete should I order to cover the typical 10% waste?"