Concrete Slab Material Calculator

Estimate slab concrete volume, order quantity with waste, selected bag count, material cost, slab area, and a branded report with a live 3D slab diagram.

Measurement inputs

Live calculation updates the slab volume, report, and 3D preview.

Live

Project name This name is used in the saved report.

Unit system

Bag estimate based on

Slab size

Length

Width

Thickness

Material settings

Waste (%) 10% is common for many slab jobs.

Concrete mix type Choose the concrete mix planned for the slab.

Bag yield used Select the bag size used for this material estimate.

Currency symbol Use $, £, €, AED, or your own symbol.

Cost per selected bag

Optional. Use 0 if you only need material quantity.

Live 3D slab preview

Labels and arrows use your current measurements.

Length –

Width –

Thickness –

Order quantity with waste

Concrete needed after adding the waste percentage.

–

Base slab volume –

Cubic feet –

Cubic meters –

Slab area –

Selected bags –

Bag yield used –

Waste added –

Estimated material cost –

Formula used

The same formula and steps appear in the PDF report.

Volume = Length × Width × Thickness

All measurements are converted to feet for volume, square feet for area, and then converted to cubic yards and cubic meters.

Enter valid measurements to see the calculation steps.