Concrete Calculator
Calculate concrete slab volume in cubic meters. Length, width, depth inputs.
How to Use
Enter your values in the fields above and click Calculate to get instant results. All computations run locally in your browser. No data is ever uploaded or stored.
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Concrete Volume Estimation
CalcSolver's concrete calculator estimates the volume of concrete needed for rectangular slabs, circular columns, and footings — then calculates cost based on price per cubic yard or meter. It accounts for standard waste factors to ensure you order enough material.
A 10ft × 12ft slab, 6 inches deep requires approximately 2.22 cubic yards of concrete (adding 10% waste = 2.44 yards to order). At $150/cubic yard, total material cost is about $366. For a circular column 2ft diameter × 3ft tall, volume = π × 1² × 3 ≈ 9.42 cubic feet = 0.35 cubic yards.
Always order 10-15% more than calculated to account for spillage, uneven surfaces, and slight variations in dimensions. Concrete is typically sold by the cubic yard in the US and cubic meter internationally. Ready-mix delivery charges depend on distance and minimum order size. Use CalcSolver's unit converter for length/volume unit conversions.
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Frequently Asked Questions
How do I calculate how much concrete I need?
Calculate the volume of your project: length × width × depth. Concrete is sold by the cubic yard. To convert cubic feet to cubic yards, divide by 27. Always order 5-10% extra to account for spillage and uneven surfaces.
What is the difference between concrete and cement?
Cement is an ingredient in concrete. Concrete is a mixture of cement, sand, gravel (aggregate), and water. Cement is the binding agent that holds the mixture together.
How many bags of concrete do I need?
A standard 80-pound bag of premixed concrete covers about 0.6 cubic feet. For a 4-inch thick slab that is 10 feet by 10 feet, you need about 37 bags (3.33 cubic feet ÷ 0.6).