Concrete Mix-Ratio Calculator
Calculate Portland cement, sand, aggregate, and cement bags for custom site-batched concrete ratios.
Recent Calculations
My Project
No sections added yet. Calculate a project above, then choose “Add This Section to My Project” to build a running total across multiple sections (slab + apron + footing, for example).
How to Use This Calculator
Enter the measured project dimensions, review the net quantity, choose an extra-material allowance, and confirm the final order with your supplier or project documents.
Important
Results are planning estimates. Structural dimensions, reinforcement, mix specifications, and code requirements must come from approved plans or qualified professionals.