|
We hope that this conversion chart is of use to modellers. It is very
similar to our drill size conversion chart, but that chart includes numbered and
lettered drill sizes.
|
INCHES | METRIC |
INCHES | METRIC |
INCHES | METRIC |
| FRACTION | DECIMAL |
mm | FRACTION |
DECIMAL | mm |
FRACTION | 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 |
|
