Drilling RPM calculator

RPM = (Vc × 1000) / (π × D), where Vc is cutting speed (m/min) and D is drill diameter (mm).

Drill diameter (mm)

Material (suggests a starting cutting speed)

Cutting speed, Vc (m/min)

Orientative starting point for an HSS drill - edit freely for your tooling/material.

RPM	796 RPM

Reference values only - always verify against the actual part before machining, tapping or tightening anything.