1-800-428-0040 sales@wrcobb.com

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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