Coverage: #0-80 to 1"-8
- Thread pitch
- Wrench sizes
- Strength grades
- Compatibility ratings
Conversion Charts & Reference TablesImperial to Metric Reference for Manufacturing
Comprehensive imperial to metric conversion charts for manufacturing professionals. All charts are free to use, printable, and downloadable as CSV/PDF for shop floor reference.
Comprehensive Data
Complete coverage of common fastener, tolerance, and hardware standards.
Print-Optimized
Clean layouts designed for shop floor printouts and quick reference.
Downloadable
Export charts as CSV or PDF for spreadsheets and documentation.
Available Charts
Fastener Sizes
Imperial to Metric Thread Conversion (UNC/UNF)
Drill Bit Sizes
Fractional, Number & Letter Series to Metric
Coverage: 1/64" to 1", #80-#1, A-Z
- Decimal equivalents
- Metric sizes
- Tap drill recommendations
Tolerance Grades
ANSI B4.1 to ISO 286 IT Grades
Coverage: IT1 to IT18
- Tolerance values
- Fit types
- Size ranges
Material Grades
Steel and aluminum grade cross-reference caveats
Coverage: Common steel & aluminum alloys
- Grade references
- Standard caveats
- Use-case notes
Bearing Sizes
Inch and Metric Bearing Dimension Reference
Coverage: R-series and 6000-series
- ID / OD dimensions
- Width
- Dimension caveats
Pipe Thread Sizes
NPT and BSP Pipe Thread Dimension Reference
Coverage: 1/8" NPT to 4" NPT
- TPI and pitch
- Nominal size caveats
- Thread family warnings
Sheet Metal Gauge
Steel & Aluminum Gauge to Inch/mm Thickness
Coverage: 10-36 gauge
- Steel thickness
- Aluminum thickness
- Inch and mm equivalents
Wire Gauge
AWG Wire Gauge to Inch/mm Diameter
Coverage: AWG 0000-40
- AWG diameter
- Area calculation
- Ampacity caveats
Surface Roughness
Ra (ΞΌin) to Ra (ΞΌm) Conversion
Coverage: 1-250 ΞΌin
- Ra ΞΌin to ΞΌm
- Process cautions
- RMS/Rz caveats
Wrench Sizes
SAE Fractional to Metric Wrench & Socket References
Coverage: 1/4" to 2"
- Exact mm conversion
- Closest metric references
- Fit cautions
Coming Soon
More charts are being developed. Check back soon or suggest a chart.
Want All Charts in One Package?
Download the complete chart collection as a single PDF for offline reference. Perfect for shop floor use.
Interactive Tools
Beyond static charts β use our interactive calculators for more complex conversions.