Construction calculators that just work
Instant, visual and mobile-friendly. Estimate materials for your next project — no sign-up, no spreadsheet, no guesswork.
Roofing & Framing
Roof Pitch Calculator
Convert rise/run to pitch, angle and rafter length — with a live diagram.
Stair Stringer Calculator
Risers, exact riser height and stringer length — with code checks.
Rafter Length Calculator
Rafter length from span, pitch and overhang — gable or shed roof.
Board Foot Calculator
Board feet and lumber cost from dimensions.
Concrete & Masonry
Landscaping & Yard
Interior & Finishing
Paint Calculator
Gallons of paint from room size, openings and coats.
Drywall Calculator
Sheets, screws, mud and tape for walls and ceilings.
Tile Calculator
Tile count with the right waste factor for your layout.
Wallpaper Calculator
Double rolls from wall size and pattern repeat.
BTU Calculator
The right AC or heater size for any room.