Feeds and Speeds Calculators

Calculating Feeds and Speeds For Router Bits

Calculating feeds and speeds for your CNC machine and router bits is a crucial step to achieving quality results and long tool life.  This video from Onsrud explains the process well:

To find your chipload for an Onsrud router bit, start here: Onsrud Cutting Data Recommendations

Then use our convenient calculators to find the desired information:

Feed Rate Calculator (Inches Per Minute)
RPM
Flute(s)
Chip Load (in)
Calculate

Speed (RPM) Calculator
Feed Rate (inches per minute)
Flute(s)
Chip Load (in)
Calculate

Chipload Calculator (inches)
Feed Rate (Inches per Minute)
Speed (RPM)
Flute(s)
Calculate