Comprehensive Threading Calculators

Formula: RPM = (1000 × Surface Speed) / (π × Diameter)

Threading RPM: —

Formula: Pitch (mm) = 25.4 / TPI

Thread Pitch: —

Formula: Feed Rate = RPM × Feed/Tooth × Flutes

Thread Mill Feed: —

Formulas: RPM = (1000×Speed)/(π×Dia) • Feed = RPM/TPI

RPM / Feed: —

Formula: RPM = (1000×Cut Speed)/(π×Dia)

Cutting RPM: —

Formulas: Pitch=25.4/TPI • PitchDia=Major-(0.64952×Pitch)

Pitch Diameter: —
Results: —