Calculator
Concrete Slab Calculator
Estimate concrete quantity for slabs, pads, walkways, and similar flatwork.
How to Use This Calculator
Use this calculator for slabs, pads, walkways, patios, and similar flatwork. Enter slab length, width, and thickness to estimate square footage and concrete quantity in cubic feet and cubic yards.
Estimate Disclaimer
This calculator is for rough planning and estimating only. It is not code-specific and it is not a substitute for approved plans, engineering, manufacturer installation instructions, or local building requirements.
Always verify final dimensions, waste factors, material yield, opening sizes, header requirements, spans, fastening schedules, and any project-specific requirements before ordering material or building.