Free CNC Speeds and Feeds Calculator
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)
Feed Rate Formula = Chipload * NumberFlutes * RPM
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Milling Surface Speeds for HSS End Mills
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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 |
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Drilling Surface Speeds for HSS Twist Drills
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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 |
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Milling Chiploads for HSS End Mills
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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 |
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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. |
|
|
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 |
|
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 |
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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. |
|
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.
Improve My Feeds and Speeds For
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.
More Feeds and Speeds Calculators
Recently updated on July 28th, 2024 at 07:49 am
