Gauge Table
The table below offers the conversion of fractional inches, decimal inches, and millimeters cross-referenced to the B&S Gauge. This is a convenient table to reference to determine the gauge you are planning to order on karat gold, sterling silver, platinum or base metal material.
Fractional Inch 1/100 thru 3/32
| FRACTIONAL INCH |
DECIMAL INCH |
M/M | B & S GAUGE |
| 1/100 | 0.010 | 0.25 | 30 |
| 0.011 | 0.28 | 29 | |
| 0.012 | 0.30 | 28 | |
| 0.014 | 0.36 | 27 | |
| 1/64 | 0.016 | 0.40 | 26 |
| 0.018 | 0.46 | 25 | |
| 0.020 | 0.50 | 24 | |
| 0.022 | 0.56 | 23 | |
| 0.024 | 0.60 | ||
| 0.025 | 0.64 | 22 | |
| 0.028 | 0.70 | 21 | |
| 0.030 | 0.75 | ||
| 1/32 | 0.031 | 0.80 | |
| 0.032 | 0.82 | 20 | |
| 0.035 | 0.90 | ||
| 0.036 | 0.90 | 19 | |
| 0.040 | 1.00 | 18 | |
| 0.043 | 1.10 | ||
| 0.045 | 1.14 | 17 | |
| 3/64 | 0.047 | 1.20 | |
| 0.049 | 1.25 | ||
| 0.051 | 1.30 | 16 | |
| 0.055 | 1.40 | ||
| 0.057 | 1.45 | 15 | |
| 0.059 | 1.50 | ||
| 1/16 | 0.063 | 1.60 | 14 |
| 0.067 | 1.70 | ||
| 0.071 | 1.80 | ||
| 0.072 | 1.83 | 13 | |
| 0.075 | 1.90 | ||
| 5/64 | 0.079 | 2.00 | |
| 0.081 | 2.06 | 12 | |
| 0.083 | 2.10 | ||
| 0.087 | 2.20 | ||
| 0.091 | 2.30 | 11 | |
| 3/32 | 0.094 | 2.40 | |
| 0.098 | 2.50 | ||
| 0.102 | 2.59 | 10 |
Fractional Inch 7/64 thru 1
| FRACTIONAL INCH |
DECIMAL INCH |
M/M | B & S GAUGE |
| 7/64 | 0.108 | 2.75 | |
| 0.114 | 2.90 | 9 | |
| 0.118 | 3.00 | ||
| 1/8 | 0.125 | 3.175 | |
| 0.128 | 3.25 | 8 | |
| 0.138 | 3.50 | ||
| 0.144 | 3.66 | 7 | |
| 0.148 | 3.75 | ||
| 5/32 | 0.156 | 4.00 | |
| 0.162 | 4.12 | 6 | |
| 0.167 | 4.25 | ||
| 0.177 | 4.50 | ||
| 0.182 | 4.62 | 5 | |
| 3/16 | 0.187 | 4.75 | |
| 0.196 | 5.00 | ||
| 0.204 | 5.18 | 4 | |
| 0.207 | 5.25 | ||
| 0.217 | 5.50 | ||
| 0.226 | 5.75 | ||
| 0.236 | 6.00 | ||
| 0.246 | 6.25 | ||
| 1/4 | 0.250 | 6.35 | |
| 5/16 | 0.3125 | 7.938 | |
| 3/8 | 0.375 | 9.525 | |
| 7/16 | 0.4375 | 11.112 | |
| 1/2 | 0.500 | 12.70 | |
| 9/16 | 0.5625 | 14.288 | |
| 5/8 | 0.625 | 15.875 | |
| 11/16 | 0.6875 | 17.462 | |
| 3/4 | 0.750 | 19.05 | |
| 13/16 | 0.8125 | 20.638 | |
| 7/8 | 0.875 | 22.225 | |
| 15/16 | 0.9375 | 23.812 | |
| 1 | 1.000 | 25.40 |
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