Welcome to our Help Centre


What is wire gauge?

Wire gauge is a measuring system to denote the diameter (thickness) of wire. The system goes from 0000 through to 40. The larger the wire gauge number, the thinner the wire.

The chart below shows the Wire Gauge Chart with diameter conversions into inches and millimetres. We have only gone to 32 as we do not supply wire in smaller diameters.

Wire GaugeDiameter in mmDiameter in inches
000011.680.46
00010.400.41
009.270.36
08.250.32
17.350.29
26.540.26
35.830.23
45.190.20
54.620.18
64.110.16
73.670.14
83.260.13
92.910.114
102.590.102
112.300.091
122.050.081
131.830.072
141.630.064
151.450.057
161.290.051
171.150.045
181.020.040
190.910.036
200.810.032
210.720.029
220.650.025
230.570.023
240.510.020
250.450.018
260.400.016
270.360.014
280.320.013
290.290.011
300.250.010
310.230.009
320.200.008