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Trade Conversions

Trade and maker conversions: drill bit sizes, wire gauges, screws, pressure, torque. The specialized stuff used in workshops and on job sites.

Popular trade conversions

Millimeters to Inches (fraction)Inches (fraction) to MillimetersDrill Bit (mm) to Drill Bit (inch)Drill Bit (inch) to Drill Bit (mm)AWG (wire gauge) to Millimeters (diameter)Sheet Metal Gauge to MillimetersPSI to BarBar to PSI

All trade conversions

Millimeters to Inches (fraction)Inches (fraction) to MillimetersDrill Bit (mm) to Drill Bit (inch)Drill Bit (inch) to Drill Bit (mm)AWG (wire gauge) to Millimeters (diameter)Sheet Metal Gauge to MillimetersPSI to BarBar to PSIPSI to KilopascalsNewton-meters to Foot-poundsFoot-pounds to Newton-metersAWG (wire gauge) to Square Millimeters (area)Metric Screw Size to Imperial Screw SizeLumber Nominal Size to Actual Size (inches)Metric Thread Pitch to Inch Thread Pitch (TPI)

About trade units

Trade and maker conversions: drill bit sizes, wire gauges, screws, pressure, torque. The specialized stuff used in workshops and on job sites. We currently list 15 trade conversions — pick one from the list above, or use the calculator at the top to convert between any pair.