Lumber & woodworking calculators
Boards to buy, board feet, plywood sheets, deck boards and joists, stair and stringer layout, and epoxy for tabletops.
- Board foot calculatorCalculate board feet for one board or a whole stack of lumber from thickness, width and length, with linear feet and an optional price per board foot.
- Deck calculatorCalculate how many deck boards you need from deck size, board width, gap and length, plus linear feet of decking, joists, deck screws and cost.
- Epoxy calculatorCalculate how much epoxy resin you need in gallons, ounces and liters for a table top, bar top or river table, split into resin and hardener by mix ratio.
- Lumber calculatorCalculate how many 2×4s, 2×6s or other boards to buy from your cut length and piece count, with saw kerf, offcuts, board feet and cost.
- Plywood calculatorFind how many 4x8 or 4x10 plywood or OSB sheets you need for wall sheathing, a subfloor or a roof deck, with roof pitch, openings and waste.
- Stair calculatorEnter the floor-to-floor rise to get the number of steps, riser height, total run, stringer length and angle, checked against IRC riser and tread limits.
- Stair stringer calculatorLay out cut stair stringers from the total rise, with riser and tread sizes, framing square marks, bottom riser cut, stringer length, board size and count.