Free concrete slab cost calculator. Enter slab or pad dimensions and your local ready-mix price to estimate concrete volume, total material cost, and price per square foot.
Estimates total ready-mix concrete material cost based on slab volume, waste allowance, and local supplier unit pricing per cubic yard or meter.
\text{Total Cost} = V_{\text{concrete}} \times \text{Unit Price} \times \left(1 + \frac{\text{Waste}\%}{100}\right)
The calculator finds the slab volume (length × width × thickness), converts it to cubic yards (or cubic metres), adds your waste margin for spillage and over-excavation, then multiplies by the ready-mix price you enter. It also shows the price per square foot (or square metre) so you can compare quotes.
Enter the price your local supplier quotes per cubic yard (US typical range is roughly $120–$180/yd³ depending on region, mix strength, and delivery distance). Prices move with fuel and cement costs, so confirm with a supplier before ordering. Delivery, short-load, and weekend fees are not included.
No. This is a ready-mix material cost estimate only. Formwork, reinforcement, subgrade preparation, placement labor, and finishing are separate costs — typically they exceed the concrete material cost on residential slabs.
Calculations are preliminary estimates for planning and education. Verify results against project documents and applicable codes with a licensed Professional Engineer. The interactive calculator loads automatically when JavaScript is available.