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Gauge to Inches to Millimeters Conversion Table

Brown and Sharpe Gauge is simply a standard measure of thickness. Below are charts to use as measurement reference guides. These charts provide the necessary information to convert between inches, millimeters, feet/troy ounces, and gauges. For more information on gauge click here and for more information on hardness click here.



NOTE: 

 The feet/Toz conversion below is approximate.

  Brown and Sharpe Gauge Chart
 Gauge  Inches (" or In)  Millimeters (mm)
 0  0.325 8.26 
 2  0.257 6.54 
 4  0.204 5.19 
 6  0.162  4.12
 8  0.128  3.26
 10  0.102  2.59
 12  0.081  2.05
 14  0.064  1.63
 16  0.051  1.29
 18  0.04  1.02
 19  0.036  0.912
 20  0.032  0.812
 21  0.028  0.723
 22  0.025  0.644
 23  0.023  0.573
 24  0.02  0.511
 25  0.018  0.455
 26  0.016  0.405
 27  0.014  0.36
 28  0.013  0.321
 29  0.011  0.286
 30  0.01  0.255
 32  0.008  0.2019
 34  0.0063  0.16
Wire Conversion
 Gauge  Feet per Troy Ounce (ft/Toz)             
 14  4.65
 16  7.5
 18  12
 20  19
 22  31
 24  48
 26  77
 28  125
 30  200