Switch between concrete and drywall mode. Dimensions in, yards, bags, sheets, and labor out — then send it straight into a quote.
Ballpark, not gospel. This estimates yards, bags, sheets, and costs from the numbers you punch in — always check against your supplier's specs and your own measurements before ordering or quoting.
Straight answers, no fluff. Then run your own numbers above.
An 80 lb bag yields about 0.6 cubic feet. A 10×10 slab at 4 inches thick is 33.3 cubic feet — about 56 bags before waste, 62 with 10% waste. Past about 1 cubic yard, ready-mix delivery is cheaper than bags. The calculator shows both routes.
A 10×10 slab at 4 inches thick is 1.23 cubic yards before waste — order 1.4 yards with a 10% waste factor. At 6 inches thick it's 1.85 yards, so order 2 yards.
A 12×12 room with 8-foot ceilings has about 384 square feet of wall plus 144 for the ceiling — 528 total, minus doors and windows. That works out to 15–17 full 4×8 sheets. The calculator does the exact math from your room dimensions.
In the US, hanging and finishing drywall typically runs $1.50–$3.00 per square foot of drywall, depending on region and finish level. Materials add roughly $0.50–$1.00 per square foot.
Got your quantities? Turn this estimate into a professional quote and send it before you leave the job site.