Surface Feet Per Minute Calculator
SFM = .262 × D × RPM

This Surface Feet per Minute (SFM) calculator is an essential resource for CNC and manual machinists aiming to maximize performance and precision. By entering the tool or workpiece diameter and its rotational speed (RPM), this calculator provides the corresponding SFM value.

Why use an SFM Calculator? Knowing your SFM helps ensure efficient material removal, improved surface finish, and longer tool life. It's a quick way to verify that your machine is running at the correct speed for the material. Use this tool to optimize performance and reduce wear in both CNC and manual machining.

Please enter valid positive values for all fields.
Surface Feet Per Minute (SFM) — surface feet per minute
Abbreviation Meaning
SFMSurface Feed (Feet) Per Minute
DDiameter
RPMRevolutions Per Minute