You’ve found our simple free online Feeds and Speeds Calculator that uses the classic formulas taught in shop class. With a calculator, you don’t need to worry about how to calculate feed rate for milling, or the speed (rpms) either. Just key in the parameters and our calculator will find the answer for you.
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We offer both that 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 that simple free calculator when you could grab our full-featured G-Wizard Feeds and Speeds Calculator completely free for 30-days?
How do you lose with that deal?
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.
But you may as well drive the high performance model as long as it’s free, right?
G-Wizard Has Features for Each Machine Type
Still not convinced? Consider that G-Wizard has specific features for each machine type. In effect, you get 3 Calculators in one:
Click through each of those to see features tailored by machine type.
Or, just use our simple online cutting speeds and feeds calculator below:
Here you can create the content that will be used within the module.
End Mill Speeds and Feeds Calculator
Milling Feeds and Speeds
Spindle Speed Calculator
Tool Diameter
>
inches
Surface 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 * SurfacceSpeed) / (PI * CutterDiameter)
Feed Rate Calculator
Spindle Speed:
>
RPM
Feed/Tooth (Chipload):
>
IPT (inches / tooth)
Number of Flutes (Teeth):
>
Feed Rate:
IPM (inches / minute)
Feed Rate Formula = Chipload * NumberFlutes * RPM
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 |
Material | |
| 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 |
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. | |
Software that makes anyone a better CNC’er… Even beginners:
Free Download Racing Pigeon Speed Calculator Online
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,
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How to Calculate Feed Rate for Milling?
Wondering how to calculate feed rate for milling? 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.