Construction Calculators
Free construction calculators with real-time diagrams. Native feet-inch-fraction input, offline capable, no subscription.
Feet-inch-fraction arithmetic with conversions. The free CM Pro replacement.
Feet-inch-fraction arithmetic, conversions, and mode switcher
Rise, run, diagonal, pitch, and grade
Bending, deflection, and shear checks with NDS values
L/360 and L/720 pass/fail for ceramic and stone tile
Door and window header sizing with IRC span tables
Floor joist max spans per IRC tables
Stud layout with openings, headers, and cripples
Deck joist spans per IRC R507.5
LVL and glulam beam sizing from manufacturer tables
Turn these calculators into a full workflow — projects, quotes, invoices, online payments via your own Stripe, crew clock-in. Built by a contractor.
See TradeMaster Pro →The free Construction Master Pro replacement — with diagrams.
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