Government of Canada, Department of Justice
Canadian SI, yard, foot, inch, area and volume unit definitions
Version: current-to-2026-06-14CanadaR.S.C., 1985, c. W-6; page current to 2026-06-14Source-backedLast reviewed: 2026-08-01
Planning estimateCanada-wide arithmetic
Lumber Takeoff
Create a configurable stud-and-plate quantity estimate without header, span, species, grade or structural recommendations.
lumber-takeoff@1.0.0
Project Passport
My renovation plan · Toronto, Ontario
Private to this browser until you export it
01 · Project measurements
Adjust the inputs and the result updates immediately. Every prefilled measurement is an editable starting example, not a fact about your project.
Technical assumptions
Result updated: Studs to order, 21
02 · Planning result
Source-backed methodStuds to order
21
Base studs
19
Studs displaced by openings
6
Opening studs
6
Net stud count
19
Openings
3
Net plate length
21.95 m
Plate length to order
24.14 m
Stock-length plate pieces
10
Export
Private web sharing: Available after secure cloud save is released
Assumptions
These are part of the result, not fine print.
- Spacing, plate rows and extra pieces per opening are editable planning assumptions.: 0.4064 m spacing; 3 plate rows; 2 extra/opening
- Editable waste allowance: 10%
What this result does not decide
- This takeoff does not select wall type, member size, species, grade, headers, spans, beams or load paths.
- Corners, intersections, blocking, damaged stock and cut optimization are not included.
Planning information only. This is not a quote, code-compliance decision, structural recommendation, or substitute for site review.
Sources & method
Official source
Orion Project Studio
Geometry-only material quantity calculation contract
Version: 1.0.0Canada1.0.0Source-backedLast reviewed: 2026-08-01
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