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Do the math.
Make the sawdust.
The calculators woodworkers actually need — shelf sag, lathe speeds, segment angles, glue-up layouts — rebuilt for this decade. Every formula shown, every answer instant.
Shelving & Structure
Woodturning
Boards & Panels
End Grain Cutting Board Calculator
Strip counts, board footage, and glue-up layout for your pattern.
Coming soon
Built like a good jig
Every tool here shows its formula and cites its sources — mostly the U.S. Forest Products Laboratory’s Wood Handbook and standard machining references. If a number matters for safety, we say so. Found an error? Tell us and we’ll fix it.