Standard Drill Sizes
 
Drill Size
#107
#106
#105
#104
#103
#102
#101
#100
#99
#98
#97
#96
#95
#94
#93
#92
#91
#90
#89
#88
#87
#86
#85
#84
#83
#82
#81
#80
#79
1/64
#78
#77
#76
#75
#74
#73
#72
#70
#69
#68
1/32
#67
#66
#65
#64
#63
#62
#61
#60
#59
#58
#57
#56
3/64
#55
#54
#53
1/16
#52
#51
#50
#49
#48
5/64
#47
#46
#45
#44
#43
#42
3/32
#41
#40
#39
#38
#37
#36
#35
#34
#33
#32
#31
1/8
#30
#29
#28
9/64
#27
#26
#25
#24
#23
5/32
#22
#21
#20
#19
#107
#106
#105
#104
#103
#102
#101
#100
#99
#98
#97
#96
#95
#94
#93
#92
#91
#90
#89
#88
#87
#86
#85
#84
#83
#82
#81
#80
#79
1/64
#78
#77
#76
#75
#74
#73
#72
#70
#69
#68
1/32
#67
#66
#65
#64
#63
#62
#61
#60
#59
#58
#57
#56
3/64
#55
#54
#53
1/16
#52
#51
#50
#49
#48
5/64
#47
#46
#45
#44
#43
#42
3/32
#41
#40
#39
#38
#37
#36
#35
#34
#33
#32
#31
1/8
#30
#29
#28
9/64
#27
#26
#25
#24
#23
5/32
#22
#21
#20
#19
Decimal
.0019
.0023
.0027
.0031
.0035
.0039
.0043
.0047
.0051
.0055
.0059
.0063
.0067
.0071
.0075
.0079
.0083
.0087
.0091
.0095
.0100
.0105
.0110
.0115
.0120
.0125
.0130
.0135
.0145
.0156
.0160
.0180
.0200
.0210
.0225
.0240
.0260
.0280
.0292
.0310
.0313
.0320
.0330
.0350
.0360
.0370
.0380
.0390
.0400
.0410
.0420
.0430
.0455
.0469
.0520
.0550
.0595
.0625
.0635
.0670
.0700
.0730
.0760
.0781
.0785
.0810
.0820
.0860
.0890
.0935
.0938
.0960
.0980
.1015
.1040
.1065
.1094
.1100
.1110
.1130
.1160
.1200
.1250
.1285
.1360
.1405
.1406
.1440
.1470
.1495
.1520
.1540
.1563
.1570
.1590
.1610
.1660
.0019
.0023
.0027
.0031
.0035
.0039
.0043
.0047
.0051
.0055
.0059
.0063
.0067
.0071
.0075
.0079
.0083
.0087
.0091
.0095
.0100
.0105
.0110
.0115
.0120
.0125
.0130
.0135
.0145
.0156
.0160
.0180
.0200
.0210
.0225
.0240
.0260
.0280
.0292
.0310
.0313
.0320
.0330
.0350
.0360
.0370
.0380
.0390
.0400
.0410
.0420
.0430
.0455
.0469
.0520
.0550
.0595
.0625
.0635
.0670
.0700
.0730
.0760
.0781
.0785
.0810
.0820
.0860
.0890
.0935
.0938
.0960
.0980
.1015
.1040
.1065
.1094
.1100
.1110
.1130
.1160
.1200
.1250
.1285
.1360
.1405
.1406
.1440
.1470
.1495
.1520
.1540
.1563
.1570
.1590
.1610
.1660
 
Drill Size
#18
11/64
#17
#16
#15
#14
#13
3/16
#12
#11
#10
#9
#8
#7
13/64
#6
#5
#4
#3
7/32
#2
#1
A
15/64
B
C
D
1/4
E
F
G
17/64
H
I
J
K
9/32
L
M
19/64
N
19/64
O
P
21/64
Q
R
11/32
S
T
23/64
X
Y
13/32
Z
27/64
7/16
29/64
15/32
31/64
1/2
33/64
17/32
35/64
9/16
37/64
19/32
39/64
5/8
41/64
43/64
11/16
45/64
23/32
47/64
3/4
49/64
25/32
51/64
13/16
53/64
27/32
55/64
7/8
57/64
29/32
21/23
59/64
15/16
61/64
31/32
63/64
1
1-1/4
1-3/8
1-1/2
#18
11/64
#17
#16
#15
#14
#13
3/16
#12
#11
#10
#9
#8
#7
13/64
#6
#5
#4
#3
7/32
#2
#1
A
15/64
B
C
D
1/4
E
F
G
17/64
H
I
J
K
9/32
L
M
19/64
N
19/64
O
P
21/64
Q
R
11/32
S
T
23/64
X
Y
13/32
Z
27/64
7/16
29/64
15/32
31/64
1/2
33/64
17/32
35/64
9/16
37/64
19/32
39/64
5/8
41/64
43/64
11/16
45/64
23/32
47/64
3/4
49/64
25/32
51/64
13/16
53/64
27/32
55/64
7/8
57/64
29/32
21/23
59/64
15/16
61/64
31/32
63/64
1
1-1/4
1-3/8
1-1/2
Decimal
.1695
.1719
.1730
.1770
.1800
.1820
.1850
.1875
.1890
.1910
.1935
.1960
.1990
.2010
.2031
.2040
.2055
.2090
.2130
.2188
.2210
.2280
.2340
.2344
.2380
.2420
.2460
.2500
.2500
.2570
.2610
.2656
.2660
.2720
.2770
.2810
.2813
.2900
.2950
.2969
.3020
.3125
.3160
.3230
.3281
.3320
.3390
.3438
.3480
.3580
.3594
.3970
.4040
.4083
.4130
.4219
.4375
.4531
.4688
.4844
.5000
.5156
.5313
.5469
.5625
.5781
.5938
.6094
.6250
.6406
.6719
.6875
.7031
.7188
.7344
.7500
.7656
.7813
.7969
.8125
.8281
.8434
.8594
.8750
.8906
.9063
.9130
.9219
.9375
.9531
.9688
.9844
1.000
1.250
1.3750
1.5000
.1695
.1719
.1730
.1770
.1800
.1820
.1850
.1875
.1890
.1910
.1935
.1960
.1990
.2010
.2031
.2040
.2055
.2090
.2130
.2188
.2210
.2280
.2340
.2344
.2380
.2420
.2460
.2500
.2500
.2570
.2610
.2656
.2660
.2720
.2770
.2810
.2813
.2900
.2950
.2969
.3020
.3125
.3160
.3230
.3281
.3320
.3390
.3438
.3480
.3580
.3594
.3970
.4040
.4083
.4130
.4219
.4375
.4531
.4688
.4844
.5000
.5156
.5313
.5469
.5625
.5781
.5938
.6094
.6250
.6406
.6719
.6875
.7031
.7188
.7344
.7500
.7656
.7813
.7969
.8125
.8281
.8434
.8594
.8750
.8906
.9063
.9130
.9219
.9375
.9531
.9688
.9844
1.000
1.250
1.3750
1.5000