Plan before you buy
Get the right amount.
Skip the guesswork.
Quick material estimates for paint, flooring, concrete, mulch, and square footage.
Choose a project
Select one, add your measurements, and use the estimate as your shopping guide.
How the concrete estimate works
Thickness is converted from inches to feet, then multiplied by slab length and width. Cubic feet are divided by 27 to produce cubic yards. For bags, ProjectReady divides volume by the approximate yield of the selected bag and adds 10% before rounding up.
Cubic yards = length (ft) × width (ft) × (thickness in ÷ 12) ÷ 27
Approximate bag yields used
- 40 lb bag: 0.30 cubic feet
- 50 lb bag: 0.375 cubic feet
- 60 lb bag: 0.45 cubic feet
- 80 lb bag: 0.60 cubic feet
Actual yield varies by product, so confirm it on the bag before purchasing.
Plan the pour carefully
Ground conditions, forms, reinforcement, drainage, slab thickness, and local building requirements affect a project. This calculator estimates material volume only; it does not determine structural design.