Wood, Deck & Fence Calculators
Build decks, fences, stairs, ramps and pergolas and frame walls: boards, joists and beams checked against the IRC span tables, cut lists, board feet and lengths in feet and inches.
21 calculators · A–Z of all calculators
- Deck CalculatorDeck boards by width, gap and length, plus screws or hidden clips.
- Deck Joist CalculatorJoist count and hangers, with a span check against IRC R507.6.
- Pergola CalculatorPosts, beams, rafters and purlins for a pergola, with lengths.
- Deck Beam Span CalculatorMaximum deck beam span between posts from IRC Table R507.5.
- Fence CalculatorPickets or panels, posts, rails and post concrete for any fence.
- Board Foot CalculatorBoard feet and cost for a list of lumber.
- Firewood Cord CalculatorCords of wood in a stack.
- Lumber CalculatorHow many boards to buy for your cut list, with the cutting layout.
- Linear Feet CalculatorLinear feet to square feet and back for boards, decking and shiplap.
- Stair CalculatorSteps, riser height, treads and stringer length from the total rise.
- Ramp CalculatorWheelchair ramp length, landings and handrails per the ADA.
- Wall Framing CalculatorStuds, precut stud length, plates and headers for framed walls.
- Plywood CalculatorSheets of plywood or OSB for wall, roof and floor sheathing.
- Cabinet Door CalculatorOverlay or inset cabinet door size from the opening, to 1/16 in.
- Feet and Inches CalculatorAdd, subtract, multiply and divide lengths with fractions of an inch.
- Scale CalculatorDrawing to real size and back at 1/4 in = 1 ft, 1:100 or any scale.
- Floor Joist Span CalculatorMaximum floor joist span by wood, grade, size and spacing from IRC R502.3.1.
- Baluster Spacing CalculatorHow many balusters and the exact equal gap under the 4-inch rule.
- Ladder Angle & Length CalculatorLadder length and base distance by the OSHA 4-to-1 rule, or check your angle.
- Deck Footing CalculatorFooting size and concrete for deck posts from the load, soil and IRC R507.3.
- Stud Layout CalculatorStuds, king and jack studs, cripples, headers and plates for one wall.