Fractions And Decimal Inches Equivalents - The Engineering ToolBox

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Fractions and Decimal Inches Equivalents

64ths	32nds	16ths	8ths	4ths	half	whole	decimal(in)
1/64	0.0156
2/64	1/32	0.0313
3/64	0.0469
4/64	2/32	1/16	0.0625
5/64	0.0781
6/64	3/32	0.0938
7/64	0.1094
8/64	4/32	2/16	1/8	0.1250
9/64	0.1406
10/64	5/32	0.1563
11/64	0.1719
12/64	6/32	3/16	0.1875
13/64	0.2031
14/64	7/32	0.2188
15/64	0.2344
16/64	8/32	4/16	2/8	1/4	0.2500
17/64	0.2656
18/64	9/32	0.2813
19/64	0.2969
20/64	10/32	5/16	0.3125
21/64	0.3281
22/64	11/32	0.3438
23/64	0.3594
24/64	12/32	6/16	3/8	0.3750
25/64	0.3906
26/64	13/32	0.4063
27/64	0.4219
28/64	14/32	7/16	0.4375
29/64	0.4531
30/64	15/32	0.4688
31/64	0.4844
32/64	16/32	8/16	4/8	2/4	1/2	0.5000
33/64	0.5156
34/64	17/32	0.5313
35/64	0.5469
36/64	18/32	9/16	0.5625
37/64	0.5781
38/64	19/32	0.5938
39/64	0.6094
40/64	20/32	10/16	5/8	0.6250
41/64	0.6406
42/64	21/32	0.6563
43/64	0.6719
44/64	22/32	11/16	0.6875
45/64	0.7031
46/64	23/32	0.7188
47/64	0.7344
48/64	24/32	12/16	6/8	3/4	0.7500
49/64	0.7656
50/64	25/32	0.7813
51/64	0.7969
52/64	26/32	13/16	0.8125
53/64	0.8281
54/64	27/32	0.8438
55/64	0.8594
56/64	28/32	14/16	7/8	0.8750
57/64	0.8906
58/64	29/32	0.9063
59/64	0.9219
60/64	30/32	15/16	0.9375
61/64	0.9531
62/64	31/32	0.9688
63/64	0.9844
64/64	32/32	16/16	8/8	4/4	2/2	1/1	1.000

• 1 inch = 25.4 mm

Fractions consist of two basic parts:

• denominator - or bottom number
• numerator - or the top number

Fraction to Decimal - Example

Convert 1/8" to decimal:

1. numerator is top number - numerator is 1
2. denominator is bottom number - denominator is 8
3. divide the top number with the bottom number - 1/8 = 0.125

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