Free Shop Floor Tools

Everything you need.
Right when you need it.

Machining calculators and reference tools built by an application specialist — for anyone who lives and works on the shop floor.

⚡ Unit Conversion
Fractions snap to 1/64" N/A if no exact match
💰 Margin Calculator
Gross Profit —
🔵 SFM Calculator
Enter any 2 fields 3rd auto-fills
⚡
Cutting & Speeds 3 tools
Chip Load Calculator
IPM, RPM, and chip load for milling and drilling operations.
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Metal Removal Rate
Calculate MRR for turning, milling, and drilling in cubic inches/min.
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Speeds & Feeds Lookup
Starting point recommendations by material and tool type.
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📐
Geometry & Angles 7 tools
Triangle Calculator
Solve any triangle — sides, angles, area — from partial inputs.
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Taper & Angle Calculator
Taper per foot, taper per inch, and included angle conversions.
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Chamfer Calculator
Chamfer depth, width, and angle from any two known values.
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Drill Point Calculator
Point depth for any drill diameter and included point angle.
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Coordinate Rotation
Rotate X/Y coordinates around any center point by any angle.
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Sine Plate / Compound Angle
Gage block stack height for sine plates and compound angle setups.
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Bolt Hole Pattern
X/Y coordinates for any bolt circle with any number of holes.
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🎯
Fits, Tolerances & Finish 5 tools
ISO Fits & Tolerances
Shaft and hole limits for any ISO fit class and nominal size.
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Press Fit Calculator
Interference, insertion force, and retention for press fits.
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Surface Finish Calculator
Theoretical Ra from feed rate and nose radius for turning.
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Dovetail Calculator
Measurement over/between wires for dovetail and T-slot inspection.
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Keyseat Calculator
Keyseat width, depth, and cutter size for standard keyways.
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Reference Charts 6 tools
Thread & Tap Drill Charts
Tap drill sizes for UN, UNF, metric, and pipe threads.
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Decimal Equivalents
Fraction to decimal chart for drill sizes, wire gauges, and letter drills.
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Wire Gauge Reference
AWG and standard wire gauge sizes with decimal equivalents.
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Hardness Converter
Convert between Rockwell, Brinell, Vickers, and tensile strength.
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Unit Conversion
Length, torque, pressure, temperature — shop-relevant units.
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G & M-Code Reference
Common CNC G and M codes with descriptions and usage notes.
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Guides & Knowledge 6 resources
Material Properties
Machinability ratings, hardness ranges, and key properties by material.
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GD&T Quick Reference
Symbol definitions, feature controls, and interpretation guide.
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HSS vs Carbide Guide
When to use which — application-specific guidance for tooling selection.
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Shop Dictionary
Machining terms, abbreviations, and jargon — plain language definitions.
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Cost Estimation Guide
Framework for estimating machining costs, burden rates, and cycle time.
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Abrasives Reference Guide
Grinding wheel specs, abrasive types, bond grades, and application notes.
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💰
Cost Analysis Tools 3 tools
Drilling Cost Analysis
Side-by-side drill comparison — cost per hole, tool life, cycle time, PDF export.
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Index Bore / Groove Analysis
1-op vs 2-op tooling strategy comparison with cost breakdown.
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Multi-Op Machining Analysis
Turning, drilling, and boring cost comparison with burden rate analysis.
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