Drill Feeds and Speeds Calculator
You’ve found our simple free online Drill 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 drillling, or the speed (rpms) either. Just key in the parameters and our calculator will find the answer for you.
We offer both that free online drill 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 drill speeds and feeds calculator below:
End Mill Speeds and Feeds Calculator
Milling Feeds and Speeds
Spindle Speed Calculator
Tool Diameter > inchesSurface Speed: SFM (see table below for SFM values)
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
Drilling Surface Speeds for HSS Twist Drills
Surface Speed (SFM)
|Aluminum - Wrought (6061)||250|
|Cast Iron - Ductile||80|
|Cast Iron - Gray||120|
|Copper Alloy - Wrought||70|
|Steel - Mild||110|
|Steel - Hard Alloy||60|
|Steel - Tool||60|
Drilling Chiploads for HSS End Mills
|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 hole depth. Deeper holes tolerate much lower chip loads! You can look this up in the manufacturer's catalog, or we can help.Not Sure the Correct Value for Your Cutter? We Can Help!
Hang on: You Deserve Better!
Show Me How to Improve
Speeds and Feeds for:
How to Calculate Feed Rate for Drilling?
Wondering how to calculate feed rate for drilling? Perhaps so you can create your own spreadsheet?
The basic feed rate formulas for drilling 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.
Want all the best tips and techniques for Twist Drills? Read our Twist Drill and Hole Making Guide here.