Free Feeds and Speeds Calculator
Awesome! You’ve found not one but two Free Feeds and Speeds Calculators on this page.
If you’re looking for a Mill Speeds and Feeds Calculator, one or the other should do. If you want some other type of calculator, scroll down to the bottom of the page for a list of what we have for you.
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 Machine Speeds and Feeds Calculator
Spindle Speed Calculator
Tool Diameter
>
inches
Surface Speed:
Tool Diameter
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:
Tool Diameter
>
RPM
Spindle RPM Formula = (12 * SurfacceSpeed) / (PI * CutterDiameter)
Feed Rate Calculator
Spindle Speed:
Tool Diameter
>
RPM
Feed/Tooth (Chipload):
Tool Diameter
>
IPT (inches / tooth)
Number of Flutes (Teeth):
Tool Diameter
>
Feed Rate:
Tool Diameter
IPM (inches / minute)
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 |
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 |
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. |
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
How to Calculate Material Remove Rate for Milling?
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 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.
More Feeds and Speeds Calculators
Recently updated on July 24th, 2024 at 10:14 am