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About Lumber Calc
Lumber Calc is a free set of lumber, deck, stair, and rafter calculators for DIY homeowners, hobby woodworkers, and small contractors. Each tool shows a cut diagram, an optional IRC or DCA 6 style check, and a printable shopping list. It covers board feet, log scale, deck boards, balusters, stringers, and rafters in the browser, with no account required. Results are planning estimates, not stamped drawings or code approvals.
Key features
- Board foot, deck, stair, and rafter calculators
- Cut diagrams and IRC-style code checks
- Printable shopping lists, no account required