HammerCalc’s drywall calculator helps you turn wall length and height into sheet counts — a practical sheetrock calculator for hangers, remodelers, and estimators who already live in feet-and-inches math.
Enter wall dimensions and get a clear sheet count for common 4×8, 4×10, or 4×12 boards. Keep takeoffs next to square footage and mixed-unit math instead of bouncing between apps.
A single-purpose drywall widget can’t finish the rest of the estimate. HammerCalc pairs sheet counts with area tools and a full construction keypad for contractors.
Wall area ≈ length × height (minus large openings if you deduct them). Sheets ≈ ceil(wall_area ÷ sheet_area). A 4×8 sheet is 32 sq ft; 4×12 is 48 sq ft. Add waste (often 10–15%) for cuts and breakage.
12 ft × 8 ft wall = 96 sq ft ÷ 32 ≈ 3 sheets → order 4 sheets with waste
A single 12 ft wall, 8 ft plates, using 4×8 sheets:
Multiply wall length × height for area, divide by sheet area (32 sq ft for 4×8), round up, then add waste for cuts.
Yes in practice — both estimate gypsum board counts from wall dimensions. HammerCalc uses the drywall tool name in-app.
For tighter takeoffs, yes. Deduct large opening areas before dividing by sheet size, then still add waste.
Yes. Drywall tools are part of the pro tool set on iPhone, iPad, and Mac.
Drywall, square footage, feet & inches — all in HammerCalc.
