Concrete Batch Calculator
Calculate concrete volume, mix ratios, and materials needed for your project. Get precise batch instructions and cost estimates for any concrete job.
Step 1: Project Dimensions
Volume Calculation
For rectangular slabs: Volume = Length × Width × Depth. Convert all measurements to the same units before calculating.
Step 2: Concrete Mix Details
About Concrete Mix
Concrete mix ratio refers to the proportion of cement, sand, and aggregate. A 1:1.5:3 mix means 1 part cement, 1.5 parts sand, and 3 parts aggregate.
Concrete Batch Calculation Results
Total Project Cost
Concrete Material Quantities
Mixing Instructions
For a 1:1.5:3 mix, use 1 part cement, 1.5 parts sand, and 3 parts aggregate by volume. Add water gradually until the mixture reaches a workable consistency.
Material Calculation Formula
Total Volume = (Length × Width × Depth) × Waste Factor
Convert all measurements to the same units. Multiply by waste factor (typically 10-20%) for spillage and irregular forms. For bagged concrete, divide total cubic yards by bag yield.
Cost Breakdown
Cost Comparison by Project Type
| Project Type | Volume (yd³) | Material Cost | Labor Cost | Total Cost |
|---|---|---|---|---|
| Small Slab (10×10×4″) | 1.23 | $153.75 | $300 | $453.75 |
| Driveway (20×10×4″) | 2.47 | $308.75 | $600 | $908.75 |
| Patio (15×15×4″) | 2.78 | $347.50 | $675 | $1,022.50 |
| Foundation (30×20×8″) | 14.81 | $1,851.25 | $3,000 | $4,851.25 |
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