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Tungsten Carbide Blanks
Round, Ground, CTL (Inch)
Round, Ground, CTL (Metric)
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Size & Conversion Chart
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Castlebar Unit Conversion Table - Inch to Decimal to Metric
Castlebar Unit Conversion Table
Inch to Decimal to Metric
Useful formulas
1.00 inch = 25.4mm
1mm = 0.03937* inches
Castlebar - Unit Conversion Table
inches
metric
inches
metric
inches
metric
fractional
decimal
mm
fractional
decimal
mm
fractional
decimal
mm
.
0.0039
0.1000
.
0.5512
14.0000
.
1.8898
48.0000
.
0.0079
0.2000
9/16
0.5625
14.2875
.
1.9291
49.0000
.
0.0118
0.3000
.
0.5709
14.5000
.
1.9685
50.0000
1/64
0.0156
0.3969
37/64
0.5781
14.6844
2
2.0000
50.8000
.
0.0157
0.4000
.
0.5906
15.0000
.
2.0079
51.0000
.
0.0197
0.5000
19/32
0.5938
15.0813
.
2.0472
52.0000
.
0.0236
0.6000
39/64
0.6094
15.4781
.
2.0866
53.0000
.
0.0276
0.7000
.
0.6102
15.5000
.
2.1260
54.0000
1/32
0.0313
0.7938
5/8
0.6250
15.8750
.
2.1654
55.0000
.
0.0315
0.8000
.
0.6299
16.0000
.
2.2047
56.0000
.
0.0354
0.9000
41/64
0.6406
16.2719
.
2.2441
57.0000
.
0.0394
1.0000
.
0.6496
16.5000
2 1/4
2.2500
57.1500
.
0.0433
1.1000
21/32
0.6563
16.6688
.
2.2835
58.0000
3/64
0.0469
1.1906
.
0.6693
17.0000
.
2.3228
59.0000
.
0.0472
1.2000
43/64
0.6719
17.0656
.
2.3622
60.0000
.
0.0512
1.3000
11/16
0.6875
17.4625
.
2.4016
61.0000
.
0.0551
1.4000
.
0.6890
17.5000
.
2.4409
62.0000
.
0.0591
1.5000
45/64
0.7031
17.8594
.
2.4803
63.0000
1/16
0.0625
1.5875
.
0.7087
18.0000
2 1/2
2.5000
63.5000
.
0.0630
1.6000
23/32
0.7188
18.2563
.
2.5197
64.0000
.
0.0669
1.7000
.
0.7283
18.5000
.
2.5591
65.0000
.
0.0709
1.8000
47/64
0.7344
18.6531
.
2.5984
66.0000
.
0.0748
1.9000
.
0.7480
19.0000
.
2.6378
67.0000
5/64
0.0781
1.9844
3/4
0.7500
19.0500
.
2.6772
68.0000
.
0.0787
2.0000
49/64
0.7656
19.4469
.
2.7165
69.0000
.
0.0827
2.1000
.
0.7677
19.5000
2 3/4
2.7500
69.8500
.
0.0866
2.2000
25/32
0.7813
19.8438
.
2.7559
70.0000
.
0.0906
2.3000
.
0.7874
20.0000
.
2.7953
71.0000
3/32
0.0938
2.3813
51/64
0.7969
20.2406
.
2.8346
72.0000
.
0.0945
2.4000
.
0.8071
20.5000
.
2.8740
73.0000
.
0.0984
2.5000
13/16
0.8125
20.6375
.
2.9134
74.0000
7/64
0.1094
2.7781
.
0.8268
21.0000
.
2.9528
75.0000
.
0.1181
3.0000
53/64
0.8281
21.0344
.
2.9921
76.0000
1/8
0.1250
3.1750
27/32
0.8438
21.4313
3
3.0000
76.2000
.
0.1378
3.5000
.
0.8465
21.5000
.
3.0315
77.0000
9/64
0.1406
3.5719
55/64
0.8594
21.8281
.
3.0709
78.0000
5/32
0.1563
3.9688
.
0.8661
22.0000
.
3.1102
79.0000
.
0.1575
4.0000
7/8
0.8750
22.2250
.
3.1496
80.0000
11/64
0.1719
4.3656
.
0.8858
22.5000
.
3.1890
81.0000
.
0.1772
4.5000
57/64
0.8906
22.6219
.
3.2283
82.0000
3/16
0.1875
4.7625
.
0.9055
23.0000
.
3.2677
83.0000
.
0.1969
5.0000
29/32
0.9063
23.0188
.
3.3071
84.0000
13/64
0.2031
5.1594
59/64
0.9219
23.4156
.
3.3465
85.0000
.
0.2165
5.5000
.
0.9252
23.5000
.
3.3858
86.0000
7/32
0.2188
5.5563
15/16
0.9375
23.8125
.
3.4252
87.0000
15/64
0.2344
5.9531
.
0.9449
24.0000
.
3.4646
88.0000
.
0.2362
6.0000
61/64
0.9531
24.2094
3 1/2
3.5000
88.9000
1/4
0.2500
6.3500
.
0.9646
24.5000
.
3.5039
89.0000
.
0.2559
6.5000
31/32
0.9688
24.6063
.
3.5433
90.0000
17/64
0.2656
6.7469
.
0.9843
25.0000
.
3.5827
91.0000
.
0.2756
7.0000
63/64
0.9844
25.0031
.
3.6220
92.0000
9/32
0.2813
7.1438
1
1.0000
25.4000
.
3.6614
93.0000
.
0.2953
7.5000
.
1.0039
25.5000
.
3.7008
94.0000
19/64
0.2969
7.5406
.
1.0236
26.0000
.
3.7402
95.0000
5/16
0.3125
7.9375
.
1.0433
26.5000
.
3.7795
96.0000
.
0.3150
8.0000
.
1.0630
27.0000
.
3.8189
97.0000
21/64
0.3281
8.3344
.
1.0827
27.5000
.
3.8583
98.0000
.
0.3346
8.5000
.
1.1024
28.0000
.
3.8976
99.0000
11/32
0.3438
8.7313
.
1.1220
28.5000
.
3.9370
100.0000
.
0.3543
9.0000
.
1.1417
29.0000
4
4.0000
101.6000
23/64
0.3594
9.1281
.
1.1614
29.5000
.
4.3307
110.0000
.
0.3740
9.5000
.
1.1811
30.0000
4 1/2
4.5000
114.3000
3/8
0.3750
9.5250
.
1.2205
31.0000
.
4.7244
120.0000
25/64
0.3906
9.9219
1 1/4
1.2500
31.7500
5
5.0000
127.0000
.
0.3937
10.0000
.
1.2598
32.0000
.
5.1181
130.0000
13/32
0.4063
10.3188
.
1.2992
33.0000
.
5.5118
140.0000
.
0.4134
10.5000
.
1.3386
34.0000
.
5.9055
150.0000
27/64
0.4219
10.7156
.
1.3780
35.0000
6
6.0000
152.4000
.
0.4331
11.0000
.
1.4173
36.0000
.
6.2992
160.0000
7/16
0.4375
11.1125
.
1.4567
37.0000
.
6.6929
170.0000
.
0.4528
11.5000
.
1.4961
38.0000
.
7.0866
180.0000
29/64
0.4531
11.5094
1 1/2
1.5000
38.1000
.
7.4803
190.0000
15/32
0.4688
11.9063
.
1.5354
39.0000
.
7.8740
200.0000
.
0.4724
12.0000
.
1.5748
40.0000
8
8.0000
203.2000
31/64
0.4844
12.3031
.
1.6142
41.0000
.
9.8425
250.0000
.
0.4921
12.5000
.
1.6535
42.0000
10
10.0000
254.0000
1/2
0.5000
12.7000
.
1.6929
43.0000
20
20.0000
508.0000
.
0.5118
13.0000
.
1.7323
44.0000
30
30.0000
762.0000
33/64
0.5156
13.0969
1 3/4
1.7500
44.4500
40
40.0000
1016.0000
17/32
0.5313
13.4938
.
1.7717
45.0000
60
60.0000
1524.0000
.
0.5315
13.5000
.
1.8110
46.0000
80
80.0000
2032.0000
35/64
0.5469
13.8906
.
1.8504
47.0000
100
100.0000
2540.0000