printer friendly version
Fractional, Wire, Letter, Metric Sizes
Size	Decimal		Size	Decimal		Size	Decimal		Size	Decimal		Size	Decimal
	Equiv.			Equiv.			Equiv.			Equiv.			Equiv.
97	.0059		68	.0310		5/64"	.0781		3.6 mm	.1417		5.3 mm	.2087
96	.0063		1/32"	.0312		47	.0785		27	.1440		4	.2060
95	.0067		.8 mm	.0315		2 mm	.0787		3.7 mm	.1457		5.4 mm	.2126
94	.0071		67	.0320		2.05 mm	.0807		26	.1470		3	.2130
93	.0075		66	.0330		46	.0810		3.75 mm	.1476		5.5 mm	.2165
92	.0079		.85 mm	.0335		45	.0820		25	.1495		7/32"	.2188
91	.0083		65	.0350		2.1 mm	.0827		3.8 mm	.1496		5.6 mm	.2205
90	.0087		.9 mm	.0354		2.15 mm	.0846		24	.1520		2	.2210
89	.0091		64	.0360		44	.0860		3.9 mm	.1532		5.7 mm	.2244
88	.0065		63	.0370		2.2 mm	.0866		23	.1540		5.75 mm	.2264
.25 mm	.0098		.95 mm	.0374		2.25 mm	.0886		5/32"	.1562		1	.2280
87	.0100		62	.0380		43	.0890		22	.1570		5.8 mm	.2283
86	.0105		61	.0390		2.3 mm	.0906		4 mm	.1575		5.9 mm	.2323
85	.0110		1 mm	.0394		2.35 mm	.0925		21	.1590		A	.2340
84	.0115		60	.0400		42	.0935		20	.1610		15/64"	.2344
.3 mm	.0118		59	.0410		3/32"	.0938		4.1 mm	.1614		6 mm	.2362
83	.0120		1.05 mm	.0413		2.4 mm	.0945		4.2 mm	.1654		B	.2380
82	.0125		58	.0420		41	.0960		19	.1660		6.1 mm	.2402
.32 mm	.0126		57	.0430		2.45 mm	.0965		4.25 mm	.1673		C	.2420
.81	.0130		1.1 mm	.0433		40	.0980		4.3 mm	.1693		6.2 mm	.2441
80	.0135		1.15 mm	.0453		2.5 mm	.0984		18	.1695		D	.2460
.35 mm	.0138		56	.0465		39	.0995		11/64"	.1719		6.25 mm	.2461"
.36 mm	.0142		3/64"	.0469		38	.1015		17	.1730		6.3 mm	.2480
79	.0145		1.2 mm	.0472		2.6 mm	.1024		4.4 mm	.1732		1/4" E	.2500
.38 mm	.0150		1.25 mm	.0492		37	.1040		16	.1770		6.4 mm	.2520
1/64"	.0156		1.3 mm	.0512		2.7 mm	.1063		4.5 mm	.1772		6.5 mm	.2559
.4 mm	.0157		55	.0520		36	.1065		15	.1800		F	.2570
78	.0160		1.35 mm	.0531		2.75 mm	.1083		4.6 mm	.1811		6.6 mm	.2598
.42 mm	.0165		54	.0550		7/64"	.1094		14	.1820		G	.2610
.44 mm	.0173		1.4 mm	.0551		35	.1100		13	.1850		6.7 mm	.2638
.45 mm	.0177		1.45 mm	.0571		2.8 mm	.1102		4.7 mm	.1850		17/64"	.2656
77	.0180		1.5 mm	.0591		34	.1110		4.75 mm	.1870		6.75 mm	.2657
.46 mm	.0181		53	.0595		33	.1130		3/16"	.1875		H	.2660
.48 mm	.0189		1.55 mm	.0610		2.9 mm	.1142		4.8 mm	.1890		6.8 mm	.2677
.5 mm	.0197		1/16"	.0625		32	.1160		12	.1890		6.9 mm	.2717
76	.0200		1.6 mm	.0630		3 mm	.1181		11	.1910		I	.2720
75	.0210		52	.0635		31	.1200		4.9 mm	.1929		7 mm	.2756
.55 mm	.0217		1.65 mm	.0650		3.1 mm	.1220		10	.1935		J	.2770
74	.0225		1.7 mm	.0669		1/8"	.1250		9	.1960		7.1 mm	.2795
.6 mm	.0236		51	.0670		3.2 mm	.1260		5 mm	.1969		K	.2810
73	.0240		1.75 mm	.0689		3.25 mm	.1280		8	.1990		9/32"	.2812
72	.0250		50	.0700		30	.1285		5.1 mm	.2008		7.2 mm	.2835
.65 mm	.0256		1.8 mm	.0709		3.3 mm	.1299		7	.2010		7.25 mm	.2854
71	.0260		1.85 mm	.0728		3.4 mm	.1339		13/64"	.2031		7.3 mm	.2874
.7 mm	.0276		49	.0730		29	.1360		6	.2040		L	.2900
70	.0280		1.9 mm	.0748		3.5 mm	.1378		5.2 mm	.2047		7.4 mm	.2913
69	.0292		49	.0760		28	.1405		5	.2055		M	.2950
.75 mm	.0295		1.95 mm	.0768		9/64"	.1406		5.25 mm	.2067		7.5 mm	.2953
19/64"	.2969		Y	.4040		20.5 mm	.8071		31 mm	1.2205		1-41/64"	1.6406
7.6 mm	.2992		13/32"	.4062		13/16"	.8125		1-15/64"	1.2344		42 mm	1.6535
N	.3020		Z	.4130		21 mm	.8268		31.5 mm	1.2402		1-21/32"	1.6562
7.7 mm	.3031		10.5 mm	.4134		53/64"	.8281		1-1/4"	1.2500		1-43/64"	1.6719
7.75 mm	.3051		27/64"	.4219		27/32"	.8438		32 mm	1.2598		42.5 mm	1.6732
7.8 mm	.3071		11 mm	.4331		21.5 mm	.8465		1-17/64"	1.2656		1-11/16"	1.6875
7.9 mm	.3110		7/16"	.4375		55/64"	.8594		32.5 mm	1.2795		43 mm	1.6929
5/16"	.3125		11.5 mm	.4528		22 mm	.8861		1-9/32"	1.2812		1-45/64"	1.7031
8 mm	.3150		29/64"	.4531		7/8"	.8750		1-19/64"	1.2969		43.5 mm	1.7126
O	.3160		15/32"	.4688		22.5 mm	.8858		33 mm	1.2992		1-23/32"	1.7188
8.1 mm	.3189		12 mm	.4724		57/64"	.8906		1-5/16"	1.3125		44 mm	1.7323
8.2 mm	.3228		31/64"	.4844		23 mm	.9055		33.5 mm	1.3189		1-47/64"	1.7344
P	.3230		12.5 mm	.4921		29/32"	.9062		1-21/64"	1.3281		1-3/4"	1.7500
8.25 mm	.3248		1/2"	.5000		59/64"	.9219		34 mm	1.3386		44.5 mm	1.7520
8.3 mm	.3268		13 mm	.5118		23.5 mm	.9252		1-11/32"	1.3438		1-49/64"	1.7656
21/64"	.3281		33/64"	.5156		15/16"	.9375		34.5 mm	1.3583		45 mm	1.7717
8.4 mm	.3307		17/32"	.5312		24 mm	.9449		1-23/64"	1.3594		1-25/32"	1.7812
Q	.3320		13.5 mm	.5315		61/64"	.9531		1-3/8"	1.3750		45.5 mm	1.7913
8.5 mm	.3346		35/64"	.5469		24.5 mm	.9646		35 mm	1.3780		1-51/64"	1.7969
8.6 mm	.3386		14 mm	.5512		31/32"	.9688		1-25/64"	1.3906		46 mm	1.8110
R	.3390		9/16"	.5625		25 mm	.9843		35.5 mm	1.3976		1-13/16"	1.8125
8.7 mm	.3425		14.5 mm	.5709		63/64"	.9844		1-13/32"	1.4062		1-53/64"	1.8281
11/32"	.3438		37/64"	.5781		1"	1.0000		36 mm	1.4173		46.5 mm	1.8307
8.75 mm	.3445		15 mm	.5906		25.5 mm	1.0039		1-27/64"	1.4219		1-27/32"	1.8438
8.8 mm	.3465		19/32"	.5938		1-1/64"	1.0156		36.5 mm	1.4370		47 mm	1.8504
S	.3480		39/64"	.6094		26 mm	1.0236		1-7/16"	1.4375		1-55/64"	1.8594
8.9 mm	.3504		15.5 mm	.6102		1-1/32"	1.0312		1-29/64"	1.4531		47.5 mm	1.8701
9 mm	.3543		5/8"	.6250		26.5 mm	1.0433		37 mm	1.4567		1-7/8"	1.8750
T	.3580		16 mm	.6299		1-3/64"	1.0469		1-15/32"	1.4688		48 mm	1.8898
9.1 mm	.3583		41/64"	.6406		1-1/16"	1.0625		37.5 mm	1.4764		1-57/64"	1.8906
23/64"	.3594		16.5 mm	.6496		27 mm	1.0630		1-31/64"	1.4844		1-29/32"	1.9062
9.2 mm	.3622		21/32"	.6562		1-5/64"	1.0781		38 mm	1.4961		48.5 mm	1.9094
9.25 mm	.3642		17mm	.59386693		27.5 mm	1.0827		1-1/2"	1.5000		1-59/64"	1.9219
9.3 mm	.3661		43/64"	.6719		1-3/32"	1.0938		1-33/64"	1.5156		49 mm	1.9291
U	.3680		11/16"	.6875		28 mm	1.1024		38.5 mm	1.5157		1-15/16"	1.9375
9.4 mm	.3701		17.5 mm	.6890		1-7/64"	1.1094		1-17/32"	1.5312		49.5 mm	1.9488
9.5 mm	.3740		45/64"	.7031		28.5 mm	1.1220		39 mm	1.5354		1-61/64"	1.9531
3/8"	.3750		18 mm	.7087		1-1/8"	1.1250		1-35/64"	1.5469		50 mm	1.9685
V	.3770		23/32"	.7188		1-9/64"	1.1406		39.5 mm	1.5551		1-31/32"	1.9688
9.6 mm	.3780		18.5 mm	.7283		29 mm	1.1417		1-9/16"	1.5625		1-63/64"	1.9844
9.7 mm	.3819		47/64"	.7344		1-5/32"	1.1562		40 mm	1.5748		50.5 mm	1.9882
9.75 mm	.3839		19 mm	.7480		29.5 mm	1.1614		1-37/64"	1.5781		2"	2.0000
9.8 mm	.3858		3/4"	.7500		1-11/64"	1.1719		1-19/32"	1.5938
W	.3860		49/64"	.7656		30 mm	1.1811		40.5 mm	1.5945
9.9 mm	.3898		19.5 mm	.7677		1-3/16"	1.1875		1-39/64"	1.6094
25/64"	.3906		25/32"	.7812		30.5 mm	1.2008		41 mm	1.6142
10 mm	.3937		20 mm	.7874		1-13/64"	1.2031		1-5/8"	1.6250
X	.3970		51/64"	.7969		1-7/32"	1.2188		41.5 mm	1.6339