Lumber, framing, and structural
Five tools for the skeleton of any building project. Every dimension is code-mandated by the IRC.
Lumber calculator
Board feet and linear feet by dimensions.
Stair calculator
Rise, run, and stringers per IRC R311.7.
Stud spacing calculator
Stud count including king, jack, and cripples.
Window sizing calculator
Egress, light, and ventilation per IRC.
Shed calculator
Framing lumber, sheathing, and roofing.
Framing is the one phase where every dimension is code-mandated
The stud spacing calculator counts regular studs plus king, jack, and cripple studs at openings. The stair calculator enforces IRC R311.7 (max 7.75" rise, min 10" run). The window sizing calculator checks egress, light, and ventilation requirements.
Lumber pricing: board feet vs linear feet
The lumber calculator converts between board feet and linear feet. A 2×4 at 8 feet is 5.33 board feet. The shed calculator estimates full material lists for backyard sheds, which use the same framing principles at a smaller scale.