Drill Point Length Calculator
Determine drill point length from drill diameter and tip angle for precise hole depths and setups. Ideal for drilling, tapping, and countersinking operations when accuracy matters in CNC and manual machining.
Units:
mm
Formula
Point length (axial) = (D / 2) / tan(A / 2) = (D / 2) · cot(A / 2)
Where: D = drill diameter, A = included point angle. Result is measured along the drill axis from full diameter to the tip apex.