Machinist's Calculator
Calculator for Machinists and CNC Programmers
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Tapered Shafts and Pins


Calculate all of the dimensions required to make and measure a tapered shaft or tapered pin.

  • Convert inch per foot taper to included angle or angle per side
  • Convert angle to inch per foot
  • Convert inch per foot to taper ratio (metric tapers)
  • Convert taper ratio to angle
You can use this app to offset a lathe tailstock for taper turning, see set a tailstock.
You can also convert between inches and millimeters.

Try it for FREE! Download the DEMO

Taper pin measuring in the inch system Taper pin measuring in the metric system
This feature only available for Windows PCs and tablets.

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Machinist's Calculator is also bundled with the EditCNC g-code editor.