Free Tools
Free Framing Tools
Calculators and Ontario Building Code lookups that builders, contractors and homeowners can use to plan a frame. Every code value cites its table in the 2024 Ontario Building Code.
Wall Framing Calculator
Studs, plate and a materials list for a framed wall.
Floor Joist Span Calculator
Maximum joist span from Table 9.23.4.2.-A of the Ontario Building Code.
Roof Rafter Span Calculator
Maximum horizontal rafter span from Table 9.23.4.2.-F for snow loads of 1.0 to 2.0 kPa.
Lintel and Header Size Lookup
Sawn lumber lintel size over an opening from Tables 9.23.12.3.-A to C.
Stair Stringer Calculator
Risers, treads, run and stringer length checked against Table 9.8.4.1.
Roof Pitch and Rafter Length Calculator
Rafter length, roof angle and plumb cut from pitch and span.
Sheathing and Subfloor Sheet Calculator
Sheets of plywood or OSB for a floor, wall or sloped roof.
Lumber Takeoff and Board Foot Calculator
Board feet, linear feet and piece counts for a cut list.
Framing Nailing Schedule Lookup
Nail length and spacing from Table 9.23.3.4., Nailing for Framing.
Deck Joist and Beam Span Calculator
Deck joist span from Table 9.23.4.2.-A, built-up beam size from Table 9.23.4.2.-H and minimum post size.
Load-Bearing Wall Removal Beam Guide
Flags when an engineer is needed and lists published Part 9 beam size ranges. Not a design.
Truss vs Rafter Span Checker
Snow load by city, then whether a site-built rafter spans your roof or trusses are needed.
Firewall and Party Wall Fire Rating Checker
Fire-resistance and sound rating for party walls, suite separations and garage walls under Part 9.
Post and Footing Size Calculator
Footing area and thickness, post size and foundation depth rules for house columns and deck posts.
Preliminary planning only. These tools do not replace the drawings. The designer or engineer of record and the building permit set govern.
Use these tools from any AI assistant
Paste this link into ChatGPT, Claude, Gemini, Copilot, Perplexity or any AI assistant and ask it to read the result. It lists every tool with its inputs and an example link.
https://timberrframing.com/api/tools/
MCP server: https://timberrframing.com/mcp (add it as a remote MCP server in an assistant that supports them).
Each tool page also shows a ready-made example link for that tool.
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Send your plans, photos or a description of the project. We will arrange a free site visit and return an itemized quote.
