Convert dimensions to volume
Enter a known area or dimensions and slab thickness to calculate cubic yards and cubic meters.
Concrete slab estimator
Estimate concrete volume without stopping at square footage.
Concrete is ordered by volume, so area alone is not enough. A useful estimate combines the slab dimensions and thickness, then accounts for thickened edges, grade variation, waste, reinforcement, access, placement, and finishing.
Compare ready-mix and bags
Use whole-bag counts for small pours and cubic yards for truck delivery planning.
Price the full pour
Add reinforcement, forms, base, pumping, short-load fees, labor, equipment, finishing, curing, and cleanup.
Connected workflow
Plan a concrete slab in four checks
- 01
Measure each section
Separate areas with different thicknesses and include footings, grade beams, or thickened edges as distinct volumes.
- 02
Set thickness and waste
Use the specified slab thickness and allow for subgrade variation, spillage, and the ordering increment used by the supplier.
- 03
Confirm delivery details
Check minimum order, short-load charge, access, chute reach, pump needs, washout, lead time, and hot- or cold-weather requirements.
- 04
Build the installed price
Price demolition, excavation, base, forms, reinforcement, placement, finishing, curing, joints, sealing, and haul-off as needed.
What to know
When a simple slab calculation is not enough
The calculator estimates geometric volume. It does not design reinforcement, foundations, drainage, slope, structural capacity, or code compliance. Those decisions depend on the project and local requirements.
Confirm actual dimensions and elevations before ordering. For structural, permitted, or safety-critical work, follow the plans and seek the appropriate licensed professional or local authority.
Common questions
Questions contractors ask
How do I calculate concrete yards for a slab?
Multiply area by slab thickness to get cubic volume, convert to cubic yards, and add a reasonable project-specific allowance for variation and waste.
Does YardMeasure calculate concrete bags?
Yes. The concrete calculator estimates whole bag counts for common bag sizes and lets you enter a local bag price.
Can I include labor and equipment in the concrete estimate?
Yes. Send the material calculation to the estimate builder and add labor, equipment, other costs, markup, tax, deposit, and terms.