Surface Finish Calculator – Kennametal

Calculating Surface Finish, Inches Per Revolution, and Corner Radius

These calculations are based upon theoretical values and are only intended for planning purposes. Actual results will vary. No responsibility from Kennametal is assumed.

Surface finish
Metric
Inch

Surface finish

inmm
iprmm/rev
Surface Finish Results

Surface Finish Results

µm
Inches per revolution

Inches per revolution

µm
in mm
Inches Per Revolution Results

Inches Per Revolution Results

ipr mm/rev
Corner Radius

Corner Radius

µm
ipr mm/rev
Corner Radius Results

Corner Radius Results

in mm

Calculating surface finish is often one of the more complicated tasks in metalworking. You have to account for many variables including finish, corner radius, and inches per revolution. To help you avoid trial and error that may impair product quality and damage your tools, Kennametal has developed a basic surface finish calculator to help guide your application planning processes. Input the data requested for your operation in the turning surface finish calculator. If you receive inaccurate, unreliable, or strange results when using this engineering calculator, contact one of our knowledgeable application specialists for assistance with troubleshooting.

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