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.
Love this App. It functions well and makes quick work of figuring out how much wood I need. Allows for easy calculations while I am working on a project.
Metadata correction: updated species count from 900+ to 280+ in the app description to accurately reflect the shipped database.
Version 1.4.1
The developer, Jeffrey Paquette, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Identifiers
Usage Data
Privacy practices may vary, for example, based on the features you use or your age. Learn More
The developer indicated that this app supports the following accessibility features. Learn More