Framing Calculators
Stud counts, joist spans, board feet and stair dimensions.
All framing calculators 8
Working with framing quantities
Framing is where a calculation error becomes a code violation rather than just a wasted delivery. Stair geometry in particular is tightly regulated — maximum riser, minimum tread and maximum variation between risers are all specified, and inspectors measure them.
Worth knowing: Span and spacing depend on species, grade and load. Use the AWC span tables or a truss supplier rather than a rule of thumb — this is one place where guessing is genuinely unsafe.
These 8 calculators cover about 120,450 searches a month between them. Every one prints the formula it uses and a worked example, so you can check the result by hand before you order.