Lumber & framing calculators

Reviewed Lumber & framing tools

• Board foot calculator — Lumber board-foot quantity from stated thickness, width, length, piece count and allowance.
• Wall stud calculator — Preliminary wall-stud count from wall run, spacing, openings and a visible allowance.
• Floor joist calculator — Preliminary joist count and total linear footage from framing run, span and stated spacing.
• Rafter calculator — Preliminary paired-rafter count and rafter length from roof plan dimensions, pitch and spacing.
• Linear lumber calculator — Whole stock-board count from total linear run, selected stock length and visible allowance.
• Plywood & sheet goods calculator — Whole sheet-goods quantity from rectangular coverage, selected sheet coverage and allowance.

Category questions

What does each result show?

Each reviewed calculator keeps its formula, assumptions, allowance, rounding and planning limitations visible.

Can I use this as a final specification?

No. Confirm field conditions, local requirements, product documentation and final commercial terms independently.

Planning boundary

These are transparent planning tools. They do not select engineering, code, installation or final supplier requirements.