Calculate concrete volumes and material quantities for your construction projects
| PSI Strength | Mix Ratio (C:S:A) | Cement (bags/yd³) | Common Uses | Price Range |
|---|---|---|---|---|
| 2500 psi | 1:3:4 | 5.5 | Residential slabs, walkways | $110-$130/yd³ |
| 3000 psi | 1:2.5:3 | 6.0 | Driveways, patios, foundations | $120-$140/yd³ |
| 3500 psi | 1:2:3 | 6.5 | Garage floors, commercial slabs | $130-$150/yd³ |
| 4000 psi | 1:1.5:2.5 | 7.0 | Heavy equipment, structural | $140-$160/yd³ |
| 5000 psi | 1:1:2 | 8.0 | Bridges, high-rise buildings | $150-$180/yd³ |
Our free Concrete Mix Calculator helps contractors, builders, and DIY enthusiasts accurately estimate concrete volumes and material requirements for any construction project. Whether you're pouring a concrete slab, building foundations, constructing columns, or creating concrete structures, this tool provides precise calculations to optimize your material planning and budget.
Calculate concrete volume, determine cement bags needed, estimate sand and aggregate quantities, and get cost projections for your concrete projects with our comprehensive construction calculator.
Calculate concrete for rectangular slabs, circular columns, footings, walls, and irregular shapes with accurate volume calculations for each geometry type.
Access pre-defined concrete mix ratios (M5 to M25 grades) with automatic material calculations for cement, sand, and aggregate quantities.
Get precise cubic meter/cubic yard calculations with automatic conversions between different volume units for international project planning.
Calculate ready-mix concrete requirements in cubic meters or cubic yards for accurate ordering from concrete suppliers and batch plants.
Used by civil engineers, contractors, construction managers, and DIY builders worldwide. No registration required - start calculating your concrete needs instantly!
Common mix ratios: 1:5:10 (M5) for non-structural work, 1:4:8 (M7.5) for foundations, 1:3:6 (M10) for floors, 1:2:4 (M15) for general RCC, 1:1.5:3 (M20) for heavy structures. Always consult structural engineers for load-bearing elements.
For a 10x10 foot slab at 4-inch thickness: 10 × 10 × 0.33 = 33 cubic feet or approximately 1.22 cubic yards. Add 5-10% extra for waste. Our calculator automatically handles these conversions and adjustments.
Ready-mix concrete is batched at a plant and delivered mixed, ensuring consistent quality. Site-mixed concrete is mixed on-site, offering flexibility but requiring careful quality control. Ready-mix is preferred for larger projects.
Add 5-10% extra concrete to your calculated volume. For complex forms, uneven subgrades, or beginner projects, use 10-15% waste factor. It's better to have a little extra than to run short during pouring.