Drill Bit Size Chart

The Drill Bit Size Chart below shows fractional inch drill bits, gauge wire drill bits, and metric drill bits sorted by size. The millimeter (mm) drill bits start with 0.05, then 0.10, and then continue in intervals of 0.10 mm. The fractional inch drill bits are in intervals of 1/64 inches.

Size
0.05mm
0.1mm
0.2mm
0.3mm
#80
#79
1/64
0.4mm
#78
#77
0.5mm
#76
#75
#74
0.6mm
#73
#72
#71
0.7mm
#70
#69
#68
1/32
0.8mm
#67
#66
#65
0.9mm
#64
#63
#62
#61
1mm
#60
#59
#58
#57
1.1mm
#56
3/64
1.2mm
1.3mm
#55
#54
1.4mm
1.5mm
#53
1/16
1.6mm
#52
1.7mm
#51
#50
1.8mm
#49
1.9mm
#48
5/64
#47
2mm
#46
#45
2.1mm
#44
2.2mm
#43
2.3mm
#42
3/32
2.4mm
#41
#40
2.5mm
#39
#38
2.6mm
#37
2.7mm
#36
7/64
#35
2.8mm
#34
#33
2.9mm
#32
3mm
#31
3.1mm
1/8
3.2mm
#30
3.3mm
3.4mm
#29
3.5mm
9/64
#28
3.6mm
#27
3.7mm
#26
#25
3.8mm
#24
3.9mm
#23
5/32
#22
4mm
#21
#20
4.1mm
4.2mm
#19
4.3mm
#18
11/64
#17
4.4mm
#16
4.5mm
#15
4.6mm
#14
#13
4.7mm
3/16
4.8mm
#12
#11
4.9mm
#10
#9
5mm
#8
5.1mm
#7
13/64
#6
5.2mm
#5
5.3mm
#4
5.4mm
#3
5.5mm
7/32
5.6mm
#2
5.7mm
#1
5.8mm
5.9mm
15/64
6mm
6.1mm
6.2mm
6.3mm
1/4
6.4mm
6.5mm
6.6mm
6.7mm
17/64
6.8mm
6.9mm
7mm
7.1mm
9/32
7.2mm
7.3mm
7.4mm
7.5mm
19/64
7.6mm
7.7mm
7.8mm
7.9mm
5/16
8mm
8.1mm
8.2mm
8.3mm
21/64
8.4mm
8.5mm
8.6mm
8.7mm
11/32
8.8mm
8.9mm
9mm
9.1mm
23/64
9.2mm
9.3mm
9.4mm
9.5mm
3/8
9.6mm
9.7mm
9.8mm
9.9mm
25/64

Inches
0.0020
0.0039
0.0079
0.0118
0.0135
0.0145
0.0156
0.0157
0.0160
0.0180
0.0197
0.0200
0.0210
0.0225
0.0236
0.0240
0.0250
0.0260
0.0276
0.0280
0.0292
0.0310
0.0312
0.0315
0.0320
0.0330
0.0350
0.0354
0.0360
0.0370
0.0380
0.0390
0.0394
0.0400
0.0410
0.0420
0.0430
0.0433
0.0465
0.0468
0.0472
0.0512
0.0520
0.0550
0.0551
0.0591
0.0595
0.0624
0.0630
0.0635
0.0669
0.0670
0.0700
0.0709
0.0730
0.0748
0.0760
0.0780
0.0785
0.0787
0.0810
0.0820
0.0827
0.0860
0.0866
0.0890
0.0906
0.0935
0.0936
0.0945
0.0960
0.0980
0.0984
0.0995
0.1015
0.1024
0.1040
0.1063
0.1065
0.1092
0.1100
0.1102
0.1110
0.1130
0.1142
0.1160
0.1181
0.1200
0.1220
0.1248
0.1260
0.1285
0.1299
0.1339
0.1360
0.1378
0.1404
0.1405
0.1417
0.1440
0.1457
0.1470
0.1495
0.1496
0.1520
0.1535
0.1540
0.1560
0.1570
0.1575
0.1590
0.1610
0.1614
0.1654
0.1660
0.1693
0.1695
0.1716
0.1730
0.1732
0.1770
0.1772
0.1800
0.1811
0.1820
0.1850
0.1850
0.1872
0.1890
0.1890
0.1910
0.1929
0.1935
0.1960
0.1969
0.1990
0.2008
0.2010
0.2028
0.2040
0.2047
0.2055
0.2087
0.2090
0.2126
0.2130
0.2165
0.2184
0.2205
0.2210
0.2244
0.2280
0.2283
0.2323
0.2340
0.2362
0.2402
0.2441
0.2480
0.2496
0.2520
0.2559
0.2598
0.2638
0.2652
0.2677
0.2717
0.2756
0.2795
0.2808
0.2835
0.2874
0.2913
0.2953
0.2964
0.2992
0.3031
0.3071
0.3110
0.3120
0.3150
0.3189
0.3228
0.3268
0.3276
0.3307
0.3346
0.3386
0.3425
0.3432
0.3465
0.3504
0.3543
0.3583
0.3588
0.3622
0.3661
0.3701
0.3740
0.3744
0.3780
0.3819
0.3858
0.3898
0.3900

Millimeter
0.0500
0.1000
0.2000
0.3000
0.3429
0.3683
0.3969
0.4000
0.4064
0.4572
0.5000
0.5080
0.5334
0.5715
0.6000
0.6096
0.6350
0.6604
0.7000
0.7112
0.7417
0.7874
0.7931
0.8000
0.8128
0.8382
0.8890
0.9000
0.9144
0.9398
0.9652
0.9906
1.0000
1.0160
1.0414
1.0668
1.0922
1.1000
1.1811
1.1894
1.2000
1.3000
1.3208
1.3970
1.4000
1.5000
1.5113
1.5856
1.6000
1.6129
1.7000
1.7018
1.7780
1.8000
1.8542
1.9000
1.9304
1.9818
1.9939
2.0000
2.0574
2.0828
2.1000
2.1844
2.2000
2.2606
2.3000
2.3749
2.3781
2.4000
2.4384
2.4892
2.5000
2.5273
2.5781
2.6000
2.6416
2.7000
2.7051
2.7743
2.7940
2.8000
2.8194
2.8702
2.9000
2.9464
3.0000
3.0480
3.1000
3.1706
3.2000
3.2639
3.3000
3.4000
3.4544
3.5000
3.5668
3.5687
3.6000
3.6576
3.7000
3.7338
3.7973
3.8000
3.8608
3.9000
3.9116
3.9630
3.9878
4.0000
4.0386
4.0894
4.1000
4.2000
4.2164
4.3000
4.3053
4.3593
4.3942
4.4000
4.4958
4.5000
4.5720
4.6000
4.6228
4.6990
4.7000
4.7555
4.8000
4.8006
4.8514
4.9000
4.9149
4.9784
5.0000
5.0546
5.1000
5.1054
5.1518
5.1816
5.2000
5.2197
5.3000
5.3086
5.4000
5.4102
5.5000
5.5480
5.6000
5.6134
5.7000
5.7912
5.8000
5.9000
5.9442
6.0000
6.1000
6.2000
6.3000
6.3405
6.4000
6.5000
6.6000
6.7000
6.7367
6.8000
6.9000
7.0000
7.1000
7.1330
7.2000
7.3000
7.4000
7.5000
7.5292
7.6000
7.7000
7.8000
7.9000
7.9254
8.0000
8.1000
8.2000
8.3000
8.3217
8.4000
8.5000
8.6000
8.7000
8.7179
8.8000
8.9000
9.0000
9.1000
9.1142
9.2000
9.3000
9.4000
9.5000
9.5104
9.6000
9.7000
9.8000
9.9000
9.9066

Gauge Number Drill Bit Size
Go here if you want to learn more about the Gauge # drill bits on the list above.