CROSS REFERENCE CHART
 
number gauge
=
 decimal equivalent inches
metric
fraction inches
letter gauge
 
80 .0135   1.15mm .0453   42 .0935   3.9mm .1535   5.4mm .2126   7.3mm .2874   3/8 .3750   21/32 .6562
.35mm .0138   56 .0465   3/32 .0938   23 .1540   3 .2130   L .2900   V .3770   17mm .6693
79 .0145   3/64 .0469   2.4mm .0945   5/32 .1562   5.5mm .2165   7.4mm .2913   9.6mm .3780   43/64 .6719
1/64 .0156   1.2mm .0472   41 .0960   22 .1570   7/32 .2188   M .2950   9.7mm .3819   11/16 .6875
.4mm .0157   1.25mm .0492   2.45mm .0965   4mm .1575   5.6mm .2205   7.5mm .2953   9.75mm .3839   17.5mm .6890
78 .0160   1.3mm .0512   40 .0980   21 .1590   2 .2210   19/64 .2969   9.8mm .3858   45/64 .7031
.45mm .0177   55 .0520   2.5mm .0984   20 .1610   5.7mm .2244   7.6mm .2992   W .3860   18mm .7087
77 .0180   1.35mm .0531   39 .0995   4.1mm .1614   5.75mm .2264   N .3020   9.9mm .3898   23/32 .7188
.5mm .0197   54 .0550   38 .1015   4.2mm .1654   1 .2280   7.7mm .3031   25/64 .3906   18.5mm .7283
76 .0200   1.4mm .0551   2.6mm .1024   19 .1660   5.8mm .2283   7.75mm .3051   10mm .3937   47/64 .7344
75 .0210   1.45mm .0571   37 .1040   4.25mm .1673   5.9mm .2323   7.8mm .3071   X .3970   19mm .7480
.55mm .0217   1.5mm .0591   2.7mm .1063   4.3mm .1693   A .2340   7.9mm .3110   Y .4040   3/4 .7500
74 .0225   53 .0595   36 .1065   18 .1695   15/64 .2344   5/16 .3125   13/32 .4062   49/64 .7656
.6mm .0236   1.55mm .0610   2.75mm .1083   11/64 .1719   6mm .2362   8mm .3150   Z .4130   19.5mm .7677
73 .0240   1/16 .0625   7/64 .1094   17 .1730   B .2380   O .3160   10.5mm .4134   25/32 .7812
72 .0250   1.6mm .0630   35 .1100   4.4mm .1732   6.1mm .2402   8.1mm .3189   27/64 .4219   20mm .7874
.65mm .0256   52 .0635   2.8mm .1102   16 .1770   C .2420   8.2mm .3228   11mm .4331   51/64 .7969
71 .0260   1.65mm .0650   34 .1110   4.5mm .1772   6.2mm .2441   P .3230   7/16 .4375   20.5mm .8071
.7mm .0276   1.7mm .0669   33 .1130   15 .1800   D .2460   8.25mm .3248   11.5mm .4528   13/16 .8125
70 .0280   51 .0670   2.9mm .1142   4.6mm .1811   6.25mm .2461   8.3mm .3268   29/64 .4531   21mm .8268
69 .0292   1.75mm .0689   32 .1160   14 .1820   6.3mm .2480   21/64 .3281   15/32 .4688   53/64 .8281
.75mm .0295   50 .0700   3mm .1181   13 .1850   E .2500   8.4mm .3307   12mm .4724   27/32 .8438
68 .0310   1.8mm .0709   31 .1200   4.7mm .1850   1/4 .2500   Q .3320   31/64 .4844   21.5mm .8465
1/32 .3012   1.85mm .0728   3.1mm .1220   4.75mm .1870   6.4mm .2520   8.5mm .3346   12.5mm .4921   55/64 .8594
.8mm .0315   49 .0730   1/8 .1250   3/16 .1875   6.5mm .2559   8.6mm .3386   1/2 .5000   22mm .8661
67 .0320   1.9mm .0748   3.2mm .1260   4.8mm .1890   F .2570   R .3390   13mm .5118   7/8 .8750
66 .0330   48 .0760   3.25mm .1280   12 .1890   6.6mm .2598   8.7mm .3425   33/64 .5156   22.5mm .8858
.85mm .0335   1.95mm .0768   30 .1285   11 .1910   G .2610   11/32 .3438   17/32 .5312   57/64 .8906
65 .0350   5/64 .0781   3.3mm .1299   4.9mm .1929   6.7mm .2638   8.75mm .3445   13.5mm .5315   23mm .9055
.9mm .0354   47 .0785   3.4mm .1339   10 .1935   17/64 .2656   8.8mm .3465   35/64 .5469   29/32 .9062
64 .0360   2mm .0787   29 .1360   9 .1960   6.75mm .2657   S .3480   14mm .5512   59/64 .9219
63 .0370   2.05mm .0807   3.5mm .1378   5mm .1969   H .2660   8.9mm .3504   9/16 .5625   23.5mm .9252
.95mm .0374   46 .0810   28 .1405   8 .1990   6.8mm .2677   9mm .3543   14.5mm .5709   15/16 .9375
62 .0380   45 .0820   9/64 .1406   5.1mm .2008   6.9mm .2717   T .3580   37/64 .5781   24mm .9449
61 .0390   2.1mm .0827   3.6mm .1417   7 .2010   I .2720   9.1mm .3583   15mm .5906   61/64 .9531
1mm .0394   2.15mm .0846   27 .1440   13/64 .2031   7mm .2756   23/64 .3594   19/32 .5938   24.5mm .9646
60 .0400   44 .0860   3.7mm .1457   6 .2040   J .2770   9.2mm .3622   39/64 .6094   31/32 .9688
59 .0410   2.2mm .0866   26 .1470   5.2mm .2047   7.1mm .2795   9.25mm .3642   15.5mm .6102   25mm .9843
1.05mm .0413   2.25mm .0886   3.75mm .1476   5 .2055   K .2810   9.3mm .3661   5/8 .6250   63/64 .9844
58 .0420   43 .0890   25 .1495   5.25mm .2067   9/32 .2812   U .3680   16mm .6299   1 1.0000
57 .0430   2.3mm .0906   3.8mm .1496   5.3mm .2087   7.2mm .2835   9.4mm .3701   41/64 .6406  
1.1mm .0433   2.35mm .0925   24 .1520   4 .2090   7.25mm .2854   9.5mm .3740   16.5mm .6496