Estimating concrete and masonry
Concrete is all about volume: multiply length × width × thickness and convert to cubic yards. Once you know the yardage, you can decide between bagged mix and a ready-mix truck, and size any rebar reinforcement. Masonry — brick, block, and stucco — is estimated by wall area, with allowances for mortar and waste. For load-bearing or tall structures, always check your local code.
Frequently asked questions
How do I estimate concrete?
Volume = length × width × thickness, converted to cubic yards (÷27 from cubic feet). The calculator also gives bag counts or you can order ready-mix.
Do I need rebar in a slab?
Often yes for crack control, and always for structural slabs. Confirm spacing and bar size with your local code.