Taper Calculator

Calculate Taper Per Foot (TPF) and angles for machining.

Dimensions

Large Diameter (D)

Small Diameter (d)

Length of Taper (L)

Taper Specs

Enter large diameter, small diameter, and length.

About this calculator

Overview

This calculator computes the Taper Per Foot (TPF) and taper angle typically used in lathe work and machining. It helps ensure precise conical shapes.

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Pro Tips

Fun Facts

"Taper Per Foot (TPF) is the standard method for specifying tapers in the US."
"Morse Tapers are varying standards of taper (approx 0.625 TPF) used for drill bits and lathe centers."
"Included angle is double the angle from the centerline."

Formula: TPF = ((D - d) / L) × 12 Angle = arctan(0.5 × (D - d) / L)