Eight workshop calculators, rebuilt mobile-first and fraction-native. Every one is free and unlimited. Species values come from the USDA Wood Handbook and are printed next to each result.
Will it sag? Deflection for any shelf — species, span, load, edging — against the 0.02 in/ft visibility standard.
Free calculatorHow much a board or panel grows and shrinks between seasons, by species and cut, in inches and fractions.
Free calculatorThe equilibrium moisture content your wood is heading for, from temperature and humidity.
Free calculatorA full bill of materials: board feet per part, waste factor, and cost at your local price.
Free calculatorThe bare tally: boards in, total board feet out. Lumber-yard math without the parts list.
Free calculatorGraduated drawer fronts that actually graduate — the traditional geometric progression, solved.
Free calculatorRank all 50 species by what you care about: stiffness, stability, hardness, weight.
Free calculatorScore ten finishes against durability, water, effort and repairability — weighted your way.