Choose a Carpentry Tool
These calculators help you estimate common carpentry materials and layouts for framing walls, building decks, and planning stair dimensions. Great for DIY projects and professional takeoffs.
Lumber Calculator
Estimate board counts by size, length, and waste factor for your build.
Open calculator →Board Foot Calculator
Calculate board feet and approximate lumber cost for woodworking projects.
Open calculator →Plywood Calculator
Estimate plywood sheets required for floors, walls, sheathing, and roofs.
Open calculator →Stud Calculator
Calculate studs per wall based on length, height, and spacing (16"/24").
Open calculator →Deck Calculator
Estimate decking boards, joists, posts, and fasteners with a waste allowance.
Open calculator →Staircase Calculator
Plan treads, risers, and stringer layout from total rise and run dimensions.
Open calculator →What These Carpentry Tools Help You Calculate
- Material counts: boards, studs, and plywood sheets with waste allowance.
- Board feet: volume-based lumber measurement for woodworking and pricing.
- Deck takeoffs: approximate joists, boards, posts, and hardware planning.
- Stair layout: tread/riser counts and basic stringer calculations.
Tips for Accurate Lumber & Framing Estimates
- Add a waste factor for cuts, knots, warping, and layout changes (often 10–15%).
- Confirm actual lumber sizes (nominal vs. actual) before buying.
- For framing, verify stud spacing, openings, and corner layouts for real counts.
- Decks and stairs can be structural—follow local building requirements and best practices.
For assumptions and formulas, see our Methodology and Data Sources.
Important Estimate Disclaimer
Calculator results are general estimates and may vary based on design requirements, hardware selection, local building codes, and jobsite conditions.
Always verify dimensions and structural requirements before purchasing materials or building. Consult a qualified professional for structural framing, decks, or stair construction when needed.