CNC Cutting Speeds
Material
Recommended Vc (Milling):80–150 m/min
Calculation mode
Inputs
Result
Enter values above to calculate.
Other Tools
CNC Cutting Speeds and Feeds Calculator
This CNC calculator helps determine spindle speed (RPM) and feed rate for milling, turning and drilling operations.
Key Formulas
Spindle Speed (RPM):
n = (Vc × 1000) / (π × D)
Feed Rate:
Vf = n × z × fz
How to Use
- 1Select material
- 2Enter tool diameter
- 3Set cutting speed
- 4Get RPM and feed instantly
What Affects Cutting Parameters
- Material type
- Tool geometry
- Cutting conditions
- Machine capabilities
Frequently Asked Questions
What is cutting speed (Vc)?
Speed of cutting edge relative to material.
What is RPM?
Number of revolutions per minute.
What is feed rate?
Speed of tool movement.