Struck-Tool Calculators
Free, instant, no sign-up. The numbers that decide a rehang — eye length, eye width, eye depth and the tongue that has to fill all three — plus the heft figures that get judged in the hand and written down nowhere. Run yours before you cut anything.
Handle Fit, Kerf & Wedge
Measure the eye, measure the tongue, and get the stock to remove off each face plus the kerf depth and wedge length — before the rasp comes out.
Open toolSwing Weight & Impact Energy
Head weight and haft length turned into the three figures that decide how a tool feels: swing weight, balance point and the energy that reaches the wood.
Open toolFirewood Stack & Cord Calculator
Measure a pile and get full cords, face cords, steres and the solid wood inside it — plus how many rounds off the log it took to build.
Open tool