Free Shop Helpers
Free woodworking tools from KingTutWoodshop
Practical calculators for planning projects, estimating lumber, avoiding finish mistakes, and buying wood with more confidence. Start with the board feet calculator or the wood finish compatibility checker.
Free Woodworking Tool
Board Feet Calculator
Calculate board feet for lumber purchases. Enter length, width, and thickness to get board footage instantly.
Open toolFree Woodworking ToolWood Finish Compatibility Checker
Check whether stain, oil, shellac, lacquer, polyurethane, varnish, and wax can be layered on common wood species.
Open toolLooking for a finished board instead of raw lumber? Explore KingTutWoodshop custom cutting boards.