4 calculators in this category
- Board Feet CalculatorBoard foot = 144 cubic inches (NHLA Rules for the Measurement and Inspection of Hardwood and Cypress)A board foot is 144 cubic inches of lumber — one inch thick, twelve inches wide, twelve inches long — and it is the unit…
- Wood Movement & Shrinkage CalculatorUSDA Wood Handbook dimensional change coefficients (FPL-GTR-190, Ch. 13)Wood swells when the air is damp and shrinks when it is dry, and it does almost all of that across the grain. A 36 in oak…
- Shelf Sag & Deflection CalculatorEuler–Bernoulli beam deflection; USDA Wood Handbook MOE valuesA shelf that sags is almost never a strength failure — the wood is nowhere near breaking. It is a stiffness failure, and…
- Lumber Cut List Yield & Kerf CalculatorLinear one-dimensional cutting-stock arithmeticBuying lumber by dividing project length by board length is how people end up one board short on a Sunday afternoon. Every…
Which one do you need?
- Board Feet Calculator
- Convert lumber thickness, width and length into board feet and dollars, with quarter notation, linear feet, cubic volume and a price table for lumber buyers.
- Wood Movement & Shrinkage Calculator
- Predict how much a panel or tabletop shrinks and swells across the grain between two moisture contents, and how much clearance the joinery has to allow.
- Shelf Sag & Deflection Calculator
- Predict how far a shelf will sag under load from span, thickness, depth and species stiffness, and see the longest span that still meets an L/360 limit.
- Lumber Cut List Yield & Kerf Calculator
- Work out how many parts fit a board once kerf and trim are gone, how many boards or sheets your cut list needs, and what the offcut waste costs you.
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