Woodworker's Toolbox

Stop doing shop math in your head.

Woodworker's Toolbox is a complete set of workshop calculators built for real woodworkers — fraction math, board feet, drill bits, Janka hardness, and more. Large buttons, one-handed operation, no account required.

CALCULATORS
• Fraction Calculator — add, subtract, multiply and divide fractions without converting to decimals.
• Board Feet Estimator — calculate board feet and lumber cost by the piece or by the project.
• Pocket Hole Guide — select material type, enter thickness, get the right screw length and thread type every time.
• Wood Movement — predict shrinkage and expansion based on species, cut, and moisture change.

REFERENCE
• Wood Species Database — 280+ species with Janka hardness ratings. Know how hard a wood is before you buy it.
• Drill Bit Selector — enter your screw size, get the right bit rounded up to the nearest standard size.
• Pilot Hole Chart — quick reference for pilot holes, clearance holes, and countersinks by screw size.
• Drill Index — complete reference organized by fractional, numbered, lettered, and metric sizes.
• Imperial ↔ Metric Converter — no mental gymnastics.

DESIGNED FOR THE SHOP
Dark mode. Works offline. No ads, no subscription, no account.