Awesome! You've found not one but two Free Online Speeds and Feeds Calculators on this page. One of them can serve as your Go-To Cnc Milling Speeds And Feeds Calculator.
"Wait, I have a CNC Router," I hear you say. No worries-either calculator can also serve as your Cnc Router Speeds And Feeds Calculator.
We offer both a free online feeds and speeds calculator using simple shop formulas, and also a free (for a limited time) full-featured calculator that is the industry leading speeds and feeds calculator. It’s used daily by thousands of the world’s best manufacturers.
They know what they’re doing and wouldn’t waste time or money if the software didn’t work.
The thing is, why use the simple free calculator when you could grab our full-featured G-Wizard Feeds and Speeds Calculator completely free for 30-days?
It takes just 37 seconds to download and start using G-Wizard. It costs you nothing and you can get great feeds and speeds from it for the next 30 days. If you want to go back to our free online calculator after that, no worries.
You may as well drive the high-performance model as long as it’s free, right?
Click on the Version of G-Wizard Best Suited to Your Needs:
Or, just use our simple online cutting feeds and speeds calculator below:
Milling Speed and Feeds Calculator
Spindle Speed Calculator
Tool Diameter
inches
Surface Speed / Cutting Speed:
SFM (see table below for SFM values).
To learn what is SFM and how to go from SFM to RPM, click this link.
Spindle Speed:
RPM
Spindle RPM Formula = (12 * SurfaceSpeed) / (PI * CutterDiameter)
Feed Rate Calculator
Feed/Tooth (Chipload):
IPT (inches / tooth)
Number of Flutes (Teeth):
Feed Rate:
IPM (inches / minute)
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Feed Rate Formula = Chipload * NumberFlutes * RPM
Milling Surface Speeds for HSS End Mills
Material
Surface Speed (SFM)
Aluminum - Wrought (6061)
250
Brass
200
Cast Iron - Ductile
90
Cast Iron - Gray
100
Copper Alloy - Wrought
120
Magnesium Alloy
250
Stainless Steel
30
Steel - Mild
110
Steel - Hard Alloy
60
Steel - Tool
60
Wood - Hardwood (For more wood see linked article)
500
Need a Material Not Listed? We Can Help!
Drilling Surface Speeds for HSS Twist Drills
Material
Surface Speed (SFM)
Aluminum - Wrought (6061)
250
Brass
200
Cast Iron - Ductile
80
Cast Iron - Gray
120
Copper Alloy - Wrought
70
Magnesium Alloy
250
Stainless Steel
30
Steel - Mild
110
Steel - Hard Alloy
60
Steel - Tool
60
Need a Material Not Listed? We Can Help!
Milling Chiploads for HSS End Mills
Material
Chipload (IPT)
Aluminum - Wrought (6061)
0.005 - 0.010
Brass
0.005 - 0.010
Cast Iron - Ductile
0.004 - 0.008
Cast Iron - Gray
0.002 - 0.006
Copper Alloy - Wrought
0.004 - 0.008
Magnesium Alloy
0.005 - 0.010
Stainless Steel
0.002 - 0.006
Steel - Mild
0.002 - 0.010
Steel - Hard Alloy
0.002 - 0.006
Steel - Tool
0.002 - 0.006
Note: Chipload should be adjusted for tool diameter. Smaller tools tolerate much lower chip loads! You can look this up in the manufacturer's catalog, or we can help.
CNC Feeds and SPeeds Chart Wood
Not Sure the Correct Value for Your Cutter? We Can Help!
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Milling Surface Speeds for HSS End Mills
Material
Aluminum - Wrought (6061)
250
Brass
200
Cast Iron - Ductile
90
Cast Iron - Gray
100
Copper Alloy - Wrought
120
Magnesium Alloy
250
Stainless Steel
30
Steel - Mild
110
Steel - Hard Alloy
60
Steel - Tool
60
Wood - Hardwood (For more wood see linked article)
500
Need a Material Not Listed? We Can Help!
Drilling Surface Speeds for HSS Twist Drills
Material
Surface Speed (SFM)
Aluminum - Wrought (6061)
250
Brass
200
Cast Iron - Ductile
80
Cast Iron - Gray
120
Copper Alloy - Wrought
70
Magnesium Alloy
250
Stainless Steel
30
Steel - Mild
110
Steel - Hard Alloy
60
Steel - Tool
60
Need a Material Not Listed? We Can Help!
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Milling Chiploads for HSS End Mills
Material
Aluminum - Wrought (6061)
0.005 - 0.010
Brass
0.005 - 0.010
Cast Iron - Ductile
0.004 - 0.008
Cast Iron - Gray
0.002 - 0.006
Copper Alloy - Wrought
0.004 - 0.008
Magnesium Alloy
0.005 - 0.010
Stainless Steel
0.002 - 0.006
Steel - Mild
0.002 - 0.010
Steel - Hard Alloy
0.002 - 0.006
Steel - Tool
0.002 - 0.006
Note: Chipload should be adjusted for tool diameter. Smaller tools tolerate much lower chip loads! You can look this up in the manufacturer's catalog, or we can help.
CNC Feeds and Speeds Chart Wood
Not Sure the Correct Value for Your Cutter? We Can Help!
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**Hang on: You Deserve Better!
Software that makes anyone a better CNC'er... Even beginners:
Better Tool Life, Surface Finish, and MRR with G-Wizard
It took years, we analyzed data from over 250 tooling catalogs,
we built a powerful cutting physics engine
with advanced algorithms that considers
almost 60 different variables, and we
worked with over 50,000 CNC'ers
like yourself to make sure you'd
have the Best Feeds and Speeds.**
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Improve My Feeds and Speeds For
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How to Calculate Material Removal Rate?
Generally, you want to find the highest Material Removal Rate that will keep reasonable tool life. Our G-Wizard Calculator automates much of that process. But, if you are using the free calculator above, you may want to click through this article to find the Material Removal Rate Formula.
How to Calculate Feed Rate?
Wondering how to calculate feed rate? Perhaps so you can create your own spreadsheet?
The basic feed rate formulas for milling are simple, but getting real-world feeds and speeds are quite a bit harder. We give you all the basic formulas in our free online Feeds and Speeds Course. It's easier just to use one of our two Cnc Milling Speeds And Feeds Calculators.
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More Feeds and Speeds Calculators
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G-Wizard Feeds and Speeds Calculator
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Milling Speeds and Feeds Calculator
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CNC Feed Rate Calculator
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Chip Load Calculator
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Simple Feeds and Speeds Calculator
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Lathe Feeds and Speeds Calculator
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Drill Feeds and Speeds Calculator
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Tapping Feeds and Speeds Calculator
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Master Feeds and Speeds Calculator List
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