Free tools for contractors

Calculators for roofs, rooms and drywall. Free, with no sign-up.

• Roofing calculatorSquares, bundles, underlayment, drip edge and ridge cap for a gable or hip roof.
• Roof pitch calculatorPitch from rise and run or an angle, with the roof area and hip factors.
• Rafter calculatorA common rafter's length from the span, pitch and overhang, with its cuts and the count.
• Board foot calculatorBoard feet and cubic feet of lumber from its size and count, and the cost at your price.
• Concrete calculatorCubic yards and bags of premix for a slab, a footing or round columns.
• Square footage calculatorRooms and odd shapes added up in square feet, square yards and square meters.
• Drywall calculatorSheets for the walls and ceiling of a room, with tape and joint compound.
• Flooring cost calculatorWhat laminate, carpet, hardwood, tile or epoxy costs installed for a room, by state.
• Roof cost estimatorWhat a new roof costs installed for a house, in shingles, steel or a flat roof, by state.
• Baseboard calculatorLinear feet of baseboard less the doorways, pieces to buy, and the installed price.
• Paint calculatorGallons for a room's walls and ceiling, by the coats and the coverage on the can.
• Siding calculatorSquares of siding for a house, with starter strip, J-channel, corners and house wrap.

En español: herramientas gratis para pasar pies a metros, pulgadas a pies y pies cuadrados a metros cuadrados.