The Site Directory is the human-readable index maintained by CNC Feeds & Speeds. It is intentionally separate from the XML sitemap: the XML sitemap is machine-readable, while this page is a navigational directory for people and agents.
Core Pages
- Home
Main CNC Feeds & Speeds homepage with basic and advanced Feed & Speed calculators.
- Calculator Library
Index of dedicated CNC calculators.
- Trade-Specific Tools
Index of operation and intent-specific tools.
- Milling Reference
CNC milling technical reference.
- Turning Reference
CNC turning technical reference.
- Drilling Reference
CNC drilling technical reference.
- Tapping Reference
CNC tapping technical reference.
- Materials
Material-specific machining references.
- Charts & Formulas
Formulas and unit relationships.
- Guides
Step-by-step machining guides.
- Articles
Technical article archive.
- About
Site purpose and methodology.
- Contact
Contact and corrections.
- Privacy Policy
Privacy information.
- Terms of Use
Terms of use.
- Disclaimer
Calculation and safety limitations.
- Site Directory
Human-readable resource index.
Core Calculators
- Feed & Speed Calculator
Calculate spindle speed and feed from cutting speed, diameter, flute count and chip load.
- Spindle Speed Calculator
Calculate spindle RPM from cutting speed and tool diameter.
- RPM Calculator
Calculate spindle speed from cutting speed and diameter.
- Feed Rate Calculator
Calculate feed rate from RPM, flute count and chip load per tooth.
- Chip Load Calculator
Calculate chip load per tooth from feed, RPM and flute count.
- SFM Calculator
Calculate surface feet per minute from spindle speed and diameter.
- Cutting Speed Calculator
Calculate cutting speed from RPM and tool diameter.
- MRR Calculator
Estimate material removal rate from feed and cutting engagement.
- Feed Per Revolution Calculator
Calculate feed per revolution from feed rate and RPM.
- Cutting Time Calculator
Estimate cutting time from cutting distance and programmed feed.
- Tapping Feed Calculator
Calculate synchronized tapping feed from RPM and thread pitch.
- Automatic Feed & Speed Calculator
Review a reference starting point from material and tool inputs.
Specialized Calculator Pages
- CNC Feed Rate Calculator
CNC Feed Rate Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- Milling Feed Rate Calculator
Milling Feed Rate Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- Drill Feed Rate Calculator
Drill Feed Rate Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- Lathe Feed Rate Calculator
Lathe Feed Rate Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- Plunge Feed Rate Calculator
Plunge Feed Rate Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- Feed Rate Calculator for Tapping
Feed Rate Calculator for Tapping with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- Feed Rate Calculator for Milling Aluminum
Feed Rate Calculator for Milling Aluminum with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- CNC RPM and Feed Rate Calculator
CNC RPM and Feed Rate Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- Metric Feed Rate Calculator
Metric Feed Rate Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- CNC Router Feed Rate Calculator
CNC Router Feed Rate Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- Milling Cutting Speed Calculator
Milling Cutting Speed Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- Lathe Cutting Speed Calculator
Lathe Cutting Speed Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- Drill Cutting Speed Calculator
Drill Cutting Speed Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- Metric Cutting Speed Calculator
Metric Cutting Speed Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- End Mill Cutting Speed Calculator
End Mill Cutting Speed Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- CNC Cutting Speed Calculator
CNC Cutting Speed Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- Thread Cutting Speed Calculator
Thread Cutting Speed Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- Sandvik Cutting Speed Calculator Cross-Check
Sandvik Cutting Speed Calculator Cross-Check with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- Cutting Tool Speed Calculator
Cutting Tool Speed Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- Milling Spindle Speed Calculator
Milling Spindle Speed Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- Lathe Spindle Speed Calculator
Lathe Spindle Speed Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- Drill Spindle Speed Calculator
Drill Spindle Speed Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- CNC Spindle Speed Calculator
CNC Spindle Speed Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- Milling MRR Calculator
Milling MRR Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- Turning MRR Calculator
Turning MRR Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- CNC MRR Calculator
CNC MRR Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- CNC Cutting Time Calculator
CNC Cutting Time Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- Lathe Cutting Time Calculator
Lathe Cutting Time Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- Cutting Length Calculator
Cutting Length Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
- Spindle Speed and Feed Rate Calculator
Spindle Speed and Feed Rate Calculator with a dedicated calculator, formula, worked example, unit guidance, verification checks and machining references.
Trade-Specific Tools
- Speed and Feed Calculator Milling
Speed and feed calculator for milling with transparent RPM, feed, chip-load, engagement and MRR calculations for CNC milling jobs.
- Speed and Feed Calculator Drilling
Drilling speed and feed calculator for RPM, feed per revolution, holemaking setup and CNC drilling checks.
- Speed and Feed Calculator Lathe
Lathe speed and feed calculator for turning RPM, feed per revolution, diameter and CNC lathe setup checks.
- Speed and Feed Calculator Metric
Metric speed and feed calculator for RPM, feed rate, chip load, cutting speed, MRR and unit conversions in CNC machining.
- Speed and Feed Calculator App
Use a browser-based speed and feed calculator app for CNC RPM, feed rate, chip load and machining calculations on desktop or mobile.
- Speed and Feed Calculator for Tapping
Tapping speed and feed calculator for RPM, thread pitch, synchronized feed and CNC tapping setup checks.
- Speed and Feed Calculator Milling Aluminum
Aluminum milling speed and feed calculator with chip-load, RPM, feed, engagement and setup guidance for CNC aluminum work.
- Speed and Feed Calculator for Reamers
Reamer speed and feed calculator for RPM, feed per revolution, hole sizing and finishing-reaming setup checks.
- Carbide Depot Feed and Speed Calculator: Using Tool Data With an Independent Calculator
Independent guide for using Carbide Depot tool information with a CNC speed and feed calculator without treating generic values as manufacturer limits.
- Drill Speed and Feed Calculator
Drill speed and feed calculator for drill RPM, feed per revolution, hole depth and CNC drilling setup checks.
- Milling Speed and Feed Calculator — Free Download & Online Tool
Free milling speed and feed calculator page with online calculator plus a downloadable worksheet for CNC RPM, feed and chip load checks.
- Lathe Speed and Feed Calculator
Lathe speed and feed calculator for spindle RPM, feed per revolution, turning diameter and CNC lathe checks.
- Tap Speed and Feed Calculator
Tap speed and feed calculator for thread pitch, TPI, RPM and synchronized tapping feed on CNC machines.
- CNC Speed and Feed Calculator
CNC speed and feed calculator for milling RPM, feed rate, chip load, engagement, MRR and machine-limit checks.
- Turning Speed and Feed Calculator
Turning speed and feed calculator for CNC lathe RPM, cutting speed, feed per revolution and CSS checks.
- Reamer Speed and Feed Calculator
Reamer speed and feed calculator for finishing holes with RPM, feed per revolution, allowance and alignment checks.
- Endmill Speed and Feed Calculator
Endmill speed and feed calculator for RPM, feed, chip load, cutter diameter, flute count and milling engagement.
- Carbide Drill Speed and Feed Calculator
Carbide drill speed and feed calculator for RPM, feed per revolution, holemaking setup and carbide-tool checks.
- Kennametal Speed and Feed Calculator: How to Cross-Check CNC Values
Independent guide for cross-checking Kennametal speed and feed values with transparent CNC RPM and feed calculations.
- Speeds and Feed Calculator
Speeds and feed calculator for CNC RPM, feed rate, chip load, cutting speed and MRR with operation-specific guidance.
- Speed and Feed Calculator Turning
Speed and feed calculator for turning with workpiece RPM, feed per revolution, CSS and machine-limit checks.
Material References
- Aluminum Machining Reference
Aluminum varies by alloy and temper. Use the exact material condition with toolmaker cutting data, then calculate RPM and feed transparently.
- Stainless Steel Machining Reference
Stainless grades differ in strength and work-hardening behavior. Match the exact grade with the cutter data and validate the setup.
- Carbon & Alloy Steel Machining Reference
Steel cutting conditions change with hardness, alloy, heat treatment and tool grade. Use the material family as a starting classification, not a single universal value.
- Titanium Machining Reference
Titanium needs careful control of heat, engagement and rigidity. Use manufacturer data for the specific grade and cutter.
- Brass & Bronze Machining Reference
Copper alloys vary from free-machining brass to tougher bronze families. Tool geometry and chip behavior influence the useful cutting range.
- Cast Iron Machining Reference
Cast irons differ in hardness, graphite structure and chip behavior. Manage abrasive wear, dust and tool condition as part of the setup.
- Engineering Plastics Machining Reference
Engineering plastics can melt, smear or deform if heat and chip evacuation are poorly controlled. The correct tool and cutting condition depend on polymer and feature.
Machining Guides
- How to Calculate CNC Feed Rate — Step-by-Step Guide
Step-by-step CNC calculation guidance with formulas, verification checks and practical setup context.
- CNC Chip Load Guide
Step-by-step CNC calculation guidance with formulas, verification checks and practical setup context.
- How to Read CNC Feed & Speed Charts
Step-by-step CNC calculation guidance with formulas, verification checks and practical setup context.
- SFM and RPM Guide for CNC Machining
Step-by-step CNC calculation guidance with formulas, verification checks and practical setup context.
- CNC Chatter Troubleshooting Guide
Step-by-step CNC calculation guidance with formulas, verification checks and practical setup context.
Technical Articles
- How to Calculate CNC Feed Rate
A practical guide to calculating CNC milling feed rate from spindle speed, flute count and chip load, with unit checks and verification steps.
- Chip Load Explained: Feed per Tooth in CNC Machining
Understand feed per tooth, how chip load is calculated, and how flute count and spindle speed change milling feed.
- How to Read Feed and Speed Charts Without Misusing Them
A practical method for interpreting CNC cutting-data charts, matching units, and cross-checking chart values with transparent calculations.
- What Is SFM in CNC Machining?
Learn what surface feet per minute means, how it relates to RPM and diameter, and when to use SFM versus metric cutting speed.
- RPM vs Feed Rate: What Changes When Spindle Speed Changes?
Understand how spindle RPM and programmed feed interact, when feed should scale, and why machine limits change the calculation.
- CNC Material Removal Rate Explained
Calculate and interpret material removal rate for CNC milling, including feed, radial engagement and axial depth.
- Feeds and Speeds for Aluminum: How to Build a Starting Point
Build an aluminum milling starting point from toolmaker cutting speed and chip load, then verify engagement, chip evacuation and machine limits.
- Feeds and Speeds for Stainless Steel: A Practical Framework
A calculation-first framework for stainless steel machining that emphasizes tool data, chip thickness, rigidity and heat control.
- CNC Tool Stick-Out, Rigidity and Chatter
Understand why tool stick-out and system rigidity affect usable CNC cutting conditions, and how to troubleshoot chatter systematically.
- Carbide vs HSS: How Tool Material Changes Cutting Data
Compare carbide and HSS cutting-data considerations and learn how tool construction changes the starting cutting condition.
Machine-readable discovery
Search engines can use the native XML sitemap at https://cncfeedspeeds.com/wp-sitemap.xml. Agents can also read llms.txt and llms-full.txt.