Uni Bremen - MARUM - Sediment Geochemistry - Leobener Str - D-28359 Bremen - Germany
Marine Geochemistry - Laboratory Methods
Conversion inch to mm - Umrechnung Zoll in mm
Typical guitar and bass string gauges - Typische Gitarren- und Bass- Saitenmasse
1 inch = 25.4 mm.                   Updated 25Jun25
some almost perfect matches to remember :
1/16" = 1.6mm, 5/64"= 2mm, 5/32"= 4mm, 15/64" = 6mm, 5/16" = 8mm, 19/32 = 15mm, 3/4" = 19mm,  29/32" = 23mm
Even easier: if you convert to /256" the numerator is almost identical to 1/10 mm
examples> 19/32" = 152/256" = 15.2 mm  (actually 15.08 mm) 7/64" = 28/256" = 2.8mm (actually 2.778mm)

/64 inch
dec inch
 inch

/256 inch
mm
 Strings:
inch
mm
1/64"
0.0156
1/64"
 4/256"
0.397

0.001
 0.025

0.0278
1/36"
 7/256"
0.711

0.002
 0.051
2/64"
0.0313
1/32"
 8/256"
0.794

0.003
 0.076

0.0350
35/1000"
 9/256"
0.889

0.004
 0.102
3/64"
0.0469
3/64"
 12/256"
1.191

0.005
 0.127

0.0500
1/20"
 13/256"
1.270

0.006
 0.152
4/64"
0.0625
1/16"
 16/256"
1.588

0.007
 0.178
5/64"
0.0781
5/64"
 20/256"
1.984
E
 0.008
 0.203
6/64"
0.0938
3/32"
 24/256"
2.381
E
 0.009
 0.229

0.1000
1/10"
 25/256"
2.540
B  E
 0.010
 0.254
7/64"
0.1094
7/64"
 28/256"
2.778
B  E 0.011
 0.279
8/64"
0.1250
1/8"
 32/256"
3.175
B  E 0.012
 0.305
9/64"
0.1406
9/64"
 36/256"
3.572
E  B 0.013
 0.330

0.1500
15/100"
 38/256"
3.810
 B
 0.014
 0.356
10/64"
0.1563
5/32"
 40/256"
3.969
G  B
 0.015
 0.381
11/64"
0.1719
11/64"
 44/256"
4.366
G
 0.016
 0.406
12/64"
0.1875
3/16"
 48/256"
4.763
G
 0.017
 0.432

0.2000
2/10"
 51/256"
5.080
G
 0.018
 0.457
13/64"
0.2031
13/64"
 52/256"
5.160
G
 0.019
 0.483
14/64"
0.2188
7/32"
 56/256"
5.556
D
 0.020
 0.508

/64 inch
dec inch
inch
 /256 inch
mm
 Strings:
inch
mm
15/64"
0.2344
15/64"
 60/256"
5.953
D
 0.021
 0.533
16/64"
0.2500
1/4"
 64/256"
6.350
D
 0.022
 0.559
17/64"
0.2656
17/64"
 68/256"
6.747
D
 0.023
 0.584
18/64"
0.2813
9/32"
 72/256"
7.144
D
 0.024
 0.610
19/64"
0.2969
19/64"
 76/256"
7.541
 D
 0.026
 0.660

0.3000
3/10"
 76/256"
7.620
D
 0.028
 0.711
20/64"
0.3125
5/16"
 80/256"
7.938
A  D
 0.030
 0.762
21/64"
0.3281
21/64"
 84/256"
8.334
 A  D
 0.032
 0.813
22/64"
0.3438
11/32"
 88/256"
8.731
D  A
 0.034
 0.864

0.3500
35/100"
 89/256"
8.890
bass C
 0.035
 0.889
23/64"
0.3594
23/64"
 92/256"
9.128
A
 0.036
 0.914
24/64"
0.3750
3/8"
 96/256"
9.525
E  A
 0.038
 0.965
25/64"
0.3906
25/64"
 100/256"
9.922
 E  A
 0.040
 1.016

0.4000
4/10"
 102/256"
10.160
E  A 0.042
 1.067
26/64"
0.4063
13/32"
 104/256"
10.319
 E  A 0.044
 1.118
27/64"
0.4219
27/64"
 108/256"
10.716
 bass G 0.045
 1.143
28/64"
0.4375
7/16"
 112/256"
11.113
A  E
 0.046
 1.168
29/64"
0.4531
29/64"
 116/256"
11.509
 E
 0.047
 1.194
30/64"
0.4688
15/32"
 120/256"
11.906
 E
 0.048
 1.219
31/64"
0.4844
31/64"
 124/256"
12.303
 E
 0.049
 1.245

/64 inch
dec inch
inch
 /256 inch
mm
 Strings:
inch
mm
32/64"
0.5000
1/2"
 128/256"
12.700
 E
 0.050
 1.270
33/64"
0.5156
33/64"
 132/256"
13.097
  E
 0.052
 1.321
34/64"
0.5313
17/32"
 136/256"
13.494
 E
 0.053
 1.346
35/64"
0.5469
35/64"
 140/256"
13.891
 E  B
 0.054
 1.372
36/64"
0.5625
9/16"
 144/256"
14.288
E  B
 0.056
 1.422
37/64"
0.5781
37/64"
 148/256"
14.684
B
 0.058
 1.473
38/64"
0.5938
19/32"
 152/256"
15.081
 B
 0.059
 1.499

0.6000
6/10"
 152/256"
15.240
B
 0.060
 1.524
39/64"
0.6094
39/64"
 156/256"
15.478
B
 0.062
 1.575
40/64"
0.6250
5/8"
 160/256"
15.875
 B
 0.064
 1.626
42/64"
0.6563
21/32"
 168/256"
16.669
 bass D
 0.065
 1.651
44/64"
0.6875
11/16"
 176/256"
17.463

0.070
 1.778

0.7000
7/10"
  178/256"
17.780

0.075
 1.905
46/64"
0.7188
23/32"
 184/256"
18.256
 bass A
 0.080
 2.032
48/64"
0.7500
3/4"
 192/256"
19.050

0.085
 2.159
50/64"
0.7813
25/32"
 200/256"
19.844
0.090
 2.286

0.8000
8/10"
 203/256"
20.320

0.095
 2.413
52/64"
0.8125
13/16"
 208/256"
20.638

0.100
 2.540
54/64"
0.8438
27/32"
 216/256"
21.431
 bass E
 0.105
 2.667
56/64"
0.8750
7/8"
 224/256"
22.225

0.110
 2.794

0.9000
9/10"
 229/256"
22.860

0.120
 3.048
58/64"
0.9063
29/32"
 232/256"
23.019
 bass B
 0.130
 3.302
60/64"
0.9375
15/16"
 240/256"
23.813

0.140
 3.556
62/64"
0.9688
31/32"
 248/256"
24.606
0.150
 3.810
64/64"
1.0000
1"
 256/256"
25.400

0.160
 4.064
from 01MAR20
page created by M.Kölling