3 calculators
Carpentry & roofing calculators
Tools for framing and the roof over it: roof squares and shingle bundles from pitch and footprint, stair risers and stringers with code checks, and board feet for lumber.
Check stair dimensions against residential code limits before cutting stringers, and price lumber by the board foot when comparing suppliers.
Related guides
Roof Pitch ExplainedWhat roof pitch means, how to measure it safely from the attic or ground, pitch-to-angle conversions, and how pitch affects shingles and material quantities.Read guide →Residential Stair Code BasicsThe key IRC stair rules for homes — maximum riser height, minimum tread depth, width, headroom, handrails and guards — explained with examples.Read guide →