Woodworking Shop Calculators
Free, instant, no sign-up. Every one of these takes the factory nominal — the figure measured at the impeller, at the arbor, at no load — and applies the losses your shop actually imposes, so the number you get is the one the machine will hold on your floor.
Dust Collection CFM Calculator
Turn a collector's badge CFM into the airflow it actually delivers at the machine port once duct, elbows and flex have taken their cut.
Open toolLathe & Drill Press Speed Calculator
Blank or bit diameter in, spindle speed out — snapped to the pulley step your machine actually has, with the power you still have at that speed.
Open toolPilot Hole & Screw Size Calculator
Pilot, clearance and counterbore diameters scaled to screw gauge and the density of the board taking the threads.
Open tool