Hello Friends, in the workshop it’s very useful to have certain information and in this post I want to share with you a Table chart with Conversion of Inch Fractions to Thousandths of an Inch which can save you time and quickly access this information.

The table chart consists of three columns. In the first column you will find all the vernier measurements in inch fractions with an accuracy of 1/128 in., so there will be 128 rows, each separated from the next or previous one by 1/128 of an inch.

In the second column of the Conversion Table Chart of inch Fractions to Thousandths of an Inch, you will find the equivalence of each inch fraction to thousandths of an inch, and this is nothing more than the result of dividing the numerator of the fraction by the denominator of the fraction, for example, if the inch fraction is 1/2 in., its value in thousandths of an inch is 1 divided by 2 which is equal to 0.500 in.

And finally, there’s the third column, in this one, the equivalence of the numbers in inches to millimeters is shown, which is nothing more than multiplying any value either from the first column or from the second column by 25.4

Table Chart with Conversion of Inch Fractions to Thousandths of an Inch

Inch Fractions	Thousandths of an Inch	Millimeters
1/128	0.0078	0.19
1/64	0.0156	0.39
3/128	0.0234	0.59
1/32	0.0313	0.79
5/128	0.0391	0.99
3/64	0.0469	1.19
7/128	0.0547	1.39
1/16	0.0625	1.58
9/128	0.0703	1.78
5/64	0.0781	1.98
11/128	0.0859	2.18
3/32	0.0938	2.38
13/128	0.1016	2.58
7/64	0.1094	2.78
15/128	0.1172	2.98
1/8	0.1250	3.18
17/128	0.1328	3.37
9/64	0.1406	3.57
19/128	0.1484	3.77
5/32	0.1563	3.97
21/128	0.1641	4.17
11/64	0.1719	4.37
23/128	0.1797	4.56
3/16	0.1875	4.76
25/128	0.1953	4.96
13/64	0.2031	5.16
27/128	0.2109	5.36
7/32	0.2188	5.56
29/128	0.2266	5.75
15/64	0.2344	5.95
31/128	0.2422	6.15
1/4	0.2500	6.35
33/128	0.2578	6.55
17/64	0.2656	6.75
35/128	0.2734	6.95
9/32	0.2813	7.14
37/128	0.2891	7.34
19/64	0.2969	7.54
39/128	0.3047	7.74
5/16	0.3125	7.94
41/128	0.3203	8.14
21/64	0.3281	8.33
43/128	0.3359	8.53
11/32	0.3438	8.73
45/128	0.3516	8.93
23/64	0.3594	9.13
47/128	0.3672	9.33
3/8	0.3750	9.53
49/128	0.3828	9.72
25/64	0.3906	9.92
51/128	0.3984	10.12
13/32	0.4063	10.32
53/128	0.4141	10.52
27/64	0.4219	10.72
55/128	0.4297	10.91
7/16	0.4375	11.11
57/128	0.4453	11.31
29/64	0.4531	11.51
59/128	0.4609	11.71
15/32	0.4688	11.91
61/128	0.4766	12.10
31/64	0.4844	12.30
63/128	0.4922	12.50
1/2	0.5000	12.70
65/128	0.5078	12.90
33/64	0.5156	13.10
67/128	0.5234	13.30
17/32	0.5313	13.49
69/128	0.5391	13.69
35/64	0.5469	13.89
71/128	0.5547	14.09
9/16	0.5625	14.29
73/128	0.5703	14.49
37/64	0.5781	14.68
75/128	0.5859	14.88
19/32	0.5938	15.08
77/128	0.6016	15.28
39/64	0.6094	15.48
79/128	0.6172	15.68
5/8	0.6250	15.88
81/128	0.6328	16.07
41/64	0.6406	16.27
83/128	0.6484	16.47
21/32	0.6563	16.67
85/128	0.6641	16.87
43/64	0.6719	17.07
87/128	0.6797	17.26
11/16	0.6875	17.46
89/128	0.6953	17.66
45/64	0.7031	17.86
91/128	0.7109	18.06
23/32	0.7188	18.26
93/128	0.7266	18.45
47/64	0.7344	18.65
95/128	0.7422	18.85
3/4	0.7500	19.05
97/128	0.7578	19.25
49/64	0.7656	19.45
99/128	0.7734	19.65
25/32	0.7813	19.84
101/128	0.7891	20.04
51/64	0.7969	20.24
103/128	0.8047	20.44
13/16	0.8125	20.64
105/128	0.8203	20.84
53/64	0.8281	21.03
107/128	0.8359	21.23
27/32	0.8438	21.43
109/128	0.8516	21.63
55/64	0.8594	21.83
111/128	0.8672	22.03
7/8	0.8750	22.23
113/128	0.8828	22.42
57/64	0.8906	22.62
115/128	0.8984	22.82
29/32	0.9063	23.02
117/128	0.9141	23.22
59/64	0.9219	23.42
119/128	0.9297	23.61
15/16	0.9375	23.81
121/128	0.9453	24.01
61/64	0.9531	24.21
123/128	0.9609	24.41
31/32	0.9688	24.61
125/128	0.9766	24.80
63/64	0.9844	25.00
127/128	0.9922	25.20
1	1.0000	25.40

You may also be interested in: Machining Table Charts.

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