Tools for Woodworkers

Project estimating

Lumber volume and cost calculator

Turn a repeated stock size into a purchase allowance. This estimate includes a separate waste percentage so the usable volume and buying quantity are not confused.

Bench calculator

Enter your measurements

No account. No upload. Your entries stay in this tab.

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Verify critical dimensions and machine setups independently before cutting project material.

01 / METHOD

How to use this calculator

  1. Enter the finished or rough dimensions for one piece.
  2. Set the total number of identical pieces.
  3. Enter the supplier price and the waste allowance you intend to buy.

02 / APPLICATION

Useful in the workshop

  • Build a lumber budget
  • Compare species priced per board foot
  • Add a transparent waste allowance

03 / MODEL

Assumptions

  • All pieces share the entered rectangular dimensions.
  • Waste allowance increases purchase volume by the entered percentage.
  • Cubic feet are calculated from actual dimensions.

04 / CHECKS

Limitations and safety

  • A percentage cannot model board-by-board defects or grain selection.
  • Supplier minimums, tax, freight, and surfacing fees are excluded.

Before cutting: independently verify important dimensions, angles, clearances, material behavior, and machine settings. Use safe procedures appropriate to your tools and material.

05 / QUESTIONS

Frequently asked questions

How much waste should I add?

It depends on grade, grain matching, defects, and your cut plan. Treat the percentage as a planning choice, not a universal rule.

Why show cubic feet and board feet?

Board feet are common for pricing hardwood; cubic feet make the physical volume easier to compare.