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Free construction calculators

Calculators for framing, roofing, concrete and finish work that read and answer in feet, inches and fractions. Free, no sign-up.

• Stair CalculatorRisers, treads, stringer length and layout marks
• Rafter CalculatorCommon, hip and jack rafters with birdsmouth
• Board Foot CalculatorLumber volume and cost for a list of boards
• Concrete CalculatorCubic yards and bags for slabs, footings and tubes
• Roofing CalculatorRoof area, squares, shingle bundles and sheathing
• Roof Pitch CalculatorPitch, angle, rise, run and diagonal from any two
• Feet and Inches CalculatorAdd, subtract, multiply and divide tape measurements
• Stud CalculatorStuds, plates and on-center layout marks
• Drywall CalculatorSheets, tape, joint compound and screws
• Deck CalculatorDecking boards, joists, rim and screws
• Fence CalculatorPosts, rails, pickets and post concrete
• Paint CalculatorGallons of paint for walls and ceilings
• Tile & Flooring CalculatorTiles, boxes of flooring and waste