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Calculations, Conversions & Charts

Calculate RPM of your Saw, Grinder or Buffing Wheel

To figure out the RPM of your Saw Blade or Grinder ! Just type in your Motor Pully size in Inches, your Arbor Pully Size in Inches and the Speed of your Motor in RPM, then click the Submit Button.

Motor Pulley Size:
Arbor Pulley Size:
Motor Speed (RPM):





Master Conversion Application for Weights



Conversion Charts and Various Instructions

Grit-Mesh-Micron Conversion Chart (23kb)
RPM Charts for Speeds for Pullys and Blades (40kb)
Rotary Tumbler Instructions (101kb)
Mohs Hardness Scale by Mineral Name (88kb)
Grit Comparison Chart (20kb)