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Jobber Length Drill Bit Chart

Jobber Length Drill Bits are standard size drill bits.

They come in a wide range of sizes, finishes and materials such as High Speed Steel, Cobalt and Solid Carbide.

Jobber length drill bits' flute length and overall length are dependant on the diamater of the drill bit. See the chart below for these specifications.

 

Fractional Sizes Decimal Equivalent (Inches) Flute Length (Inches) Overall Length (Inches)
1/64” 0.0156 3/16” 3/4”
1/32” 0.0312 1/2” 1-3/8”
3/64” 0.0469 3/4” 1-3/4”
1/16” 0.0625 7/8” 1-7/8”
5/64” 0.0781 1” 2”
3/32” 0.0938 1-1/4” 2-1/4”
7/64” 0.1094 1-1/2” 2-5/8”
1/8” 0.125 1-5/8” 2-3/4”
9/64” 0.1406 1-3/4” 2-7/8”
5/32” 0.1562 2” 3-1/8”
11/64” 0.1719 2-1/8” 3-1/4”
3/16” 0.1875 2-5/16” 3-1/2”
13/64” 0.2031 2-7/16” 3-5/8”
7/32” 0.2188 2-1/2” 3-3/4”
15/64” 0.2344 2-5/8” 3-7/8”
1/4” 0.25 2-3/4” 4”
17/64” 0.2656 2-7/8” 4-1/8”
9/32” 0.2812 2-15/16” 4-1/4”
19/64” 0.2969 3-1/16” 4-3/8”
5/16” 0.3125 3-3/16” 4-1/2”
21/64” 0.3281 3-5/16” 4-5/8”
11/32” 0.3438 3-7/16” 4-3/4”
23/64” 0.3594 3-1/2” 4-7/8”
3/8” 0.375 3-5/8” 5”
25/64” 0.3906 3-3/4” 5-1/8”
13/32” 0.4062 3-7/8” 5-1/4”
27/64” 0.4219 3-15/16” 5-3/8”
7/16” 0.4375 4-1/16” 5-1/2”
29/64” 0.4531 4-3/16” 5-5/8”
15/32” 0.4688 4-5/16” 5-3/4”
31/64” 0.4844 4-3/8” 5-7/8”
1/2” 0.5 4-1/2” 6”
33/64” 0.5156 4-13/16” 6-5/8”
17/32” 0.5312 4-13/16” 6-5/8”
35/64” 0.5469 4-13/16” 6-5/8”
9/16” 0.5625 4-13/16” 6-5/8”
37/64” 0.5781 4-13/16” 6-5/8”
19/32” 0.5938 5-3/16” 7-1/8”
39/64” 0.6094 5-3/16” 7-1/8”
5/8” 0.625 5-3/16” 7-1/8”
41/64” 0.6406 5-3/16” 7-1/8”
21/32” 0.6562 5-3/16” 7-1/8”
43/64” 0.6719 5-5/8” 7-5/8”
11/16” 0.6875 5-5/8” 7-5/8”
       
       
Letter Sizes Decimal Equivalent (Inches) Flute Length (Inches) Overall Length (Inches)
A 0.234 2-5/8” 3-7/8”
B 0.238 2-3/4” 4”
C 0.242 2-3/4” 4”
D 0.246 2-3/4” 4”
E 0.25 2-3/4” 4”
F 0.257 2-7/8” 4-1/8”
G 0.261 2-7/8” 4-1/8”
H 0.266 2-7/8” 4-1/8”
I 0.272 2-7/8” 4-1/8”
J 0.277 2-7/8” 4-1/8”
K 0.281 2-15/16” 4-1/4”
L 0.29 2-15/16” 4-1/4”
M 0.295 3-1/16” 4-3/8”
N 0.302 3-1/16” 4-3/8”
O 0.316 3-3/16” 4-1/2”
P 0.323 3-5/16” 4-5/8”
Q 0.332 3-7/16” 4-3/4”
R 0.339 3-7/16” 4-3/4”
S 0.348 3-1/2” 4-7/8”
T 0.358 3-1/2” 4-7/8”
U 0.368 3-5/8” 5”
V 0.377 3-5/8” 5”
W 0.386 3-3/4” 5-1/8”
X 0.397 3-3/4” 5-1/8”
Y 0.404 3-7/8” 5-1/4”
Z 0.413 3-7/8” 5-1/4”
       
       
Wire Sizes Decimal Equivalent (Inches) Flute Length (Inches) Overall Length (Inches)
1 0.228 2-5/8” 3-7/8”
2 0.221 2-5/8” 3-7/8”
3 0.213 2-1/2” 3-3/4”
4 0.209 2-1/2” 3-3/4”
5 0.2055 2-1/2” 3-3/4”
6 0.204 2-1/2” 3-3/4”
7 0.201 2-7/16” 3-5/8”
8 0.199 2-7/16” 3-5/8”
9 0.196 2-7/16” 3-5/8”
10 0.1935 2-7/16” 3-5/8”
11 0.191 2-5/16” 3-1/2”
12 0.189 2-5/16” 3-1/2”
13 0.185 2-5/16” 3-1/2”
14 0.182 2-3/16” 3-3/8”
15 0.18 2-3/16” 3-3/8”
16 0.177 2-3/16” 3-3/8”
17 0.173 2-3/16” 3-3/8”
18 0.1695 2-1/8” 3-1/4”
19 0.166 2-1/8” 3-1/4”
20 0.161 2-1/8” 3-1/4”
21 0.159 2-1/8” 3-1/4”
22 0.157 2” 3-1/8”
23 0.154 2” 3-1/8”
24 0.152 2” 3-1/8”
25 0.1495 1-7/8” 3”
26 0.147 1-7/8” 3”
27 0.144 1-7/8” 3”
28 0.1405 1-3/4” 2-7/8”
29 0.136 1-3/4” 2-7/8”
30 0.1285 1-5/8” 2-3/4”
31 0.12 1-5/8” 2-3/4”
32 0.116 1-5/8” 2-3/4”
33 0.113 1-1/2” 2-5/8”
34 0.111 1-1/2” 2-5/8”
35 0.11 1-1/2” 2-5/8”
36 0.1065 1-7/16” 2-1/2”
37 0.104 1-7/16” 2-1/2”
38 0.1015 1-7/16” 2-1/2”
39 0.0995 1-3/8” 2-3/8”
40 0.098 1-3/8” 2-3/8”
41 0.096 1-3/8” 2-3/8”
42 0.0935 1-1/4” 2-1/4”
43 0.089 1-1/4” 2-1/4”
44 0.086 1-1/8” 2-1/8”
45 0.082 1-1/8” 2-1/8”
46 0.081 1-1/8” 2-1/8”
47 0.0785 1” 2”
48 0.076 1” 2”
49 0.073 1” 2”
50 0.07 1” 2”
51 0.067 1” 2”
52 0.0635 7/8” 1-7/8”
53 0.0595 7/8” 1-7/8”
54 0.055 7/8” 1-7/8”
55 0.052 7/8” 1-7/8”
56 0.0465 3/4” 1-3/4”
57 0.043 3/4” 1-3/4”
58 0.042 11/16” 1-5/8”
59 0.041 11/16” 1-5/8”
60 0.04 11/16” 1-5/8”
61 0.039 11/16” 1-5/8”
62 0.038 5/8” 1-1/2”
63 0.037 5/8” 1-1/2”
64 0.036 5/8” 1-1/2”
65 0.035 5/8” 1-1/2”
66 0.033 1/2” 1-3/8”
67 0.032 1/2” 1-3/8”
68 0.031 1/2” 1-3/8”
69 0.0292 1/2” 1-3/8”
70 0.028 3/8” 1-1/4”
71 0.026 3/8” 1-1/4”
72 0.025 5/16” 1-1/8”
73 0.024 5/16” 1-1/8”
74 0.0225 1/4” 1”
75 0.021 1/4” 1”
76 0.02 3/16” 7/8”
77 0.018 3/16” 7/8”
78 0.016 3/16” 7/8”
79 0.0145 1/8” 3/4”
80 0.0135 1/8” 3/4”
       
       
Metric Sizes Decimal Equivalent (Inches) Flute Length (mm) Overall Length (mm)
0.3mm 0.0118 3mm 19mm
0.35mm 0.0138 3mm 19mm
0.4mm 0.0157 5mm 20mm
0.45mm 0.0177 5mm 20mm
0.5mm 0.0197 5mm 22mm
0.55mm 0.0217 6mm 24mm
0.6mm 0.0236 8mm 24mm
0.65mm 0.0256 10mm 26mm
0.7mm 0.0276 10mm 28mm
0.75mm 0.0295 13mm 28mm
0.8mm 0.0315 13mm 30mm
0.85mm 0.0335 16mm 30mm
0.9mm 0.0354 16mm 32mm
0.95mm 0.0374 16mm 32mm
1mm 0.0394 17mm 34mm
1.05mm 0.0413 17mm 34mm
1.1mm 0.0433 19mm 36mm
1.15mm 0.0453 19mm 36mm
1.2mm 0.0472 22mm 38mm
1.25mm 0.0492 22mm 38mm
1.3mm 0.0512 22mm 38mm
1.35mm 0.0531 22mm 40mm
1.4mm 0.0551 22mm 40mm
1.45mm 0.0571 22mm 40mm
1.5mm 0.0591 22mm 40mm
1.55mm 0.061 22mm 43mm
1.6mm 0.063 22mm 43mm
1.65mm 0.065 25mm 43mm
1.7mm 0.0669 25mm 43mm
1.75mm 0.0689 25mm 46mm
1.8mm 0.0709 25mm 46mm
1.85mm 0.0728 25mm 46mm
1.9mm 0.0748 25mm 46mm
1.95mm 0.0768 25mm 49mm
2mm 0.0787 25mm 49mm
2.05mm 0.0807 29mm 49mm
2.1mm 0.0827 29mm 49mm
2.15mm 0.0846 29mm 53mm
2.2mm 0.0866 32mm 53mm
2.25mm 0.0886 32mm 53mm
2.3mm 0.0906 32mm 53mm
2.35mm 0.0925 32mm 53mm
2.4mm 0.0945 35mm 57mm
2.45mm 0.0965 35mm 57mm
2.5mm 0.0984 35mm 57mm
2.55mm 0.1003 35mm 57mm
2.6mm 0.1024 37mm 57mm
2.65mm 0.1043 37mm 57mm
2.7mm 0.1063 37mm 61mm
2.75mm 0.1083 37mm 61mm
2.8mm 0.1102 38mm 61mm
2.85mm 0.1122 38mm 61mm
2.9mm 0.1142 41mm 61mm
2.95mm 0.1161 41mm 61mm
3mm 0.1181 41mm 61mm
3.05mm 0.1201 41mm 65mm
3.1mm 0.122 41mm 65mm
3.15mm 0.124 41mm 65mm
3.2mm 0.126 41mm 65mm
3.25mm 0.128 41mm 65mm
3.3mm 0.1299 44mm 65mm
3.35mm 0.1319 44mm 70mm
3.4mm 0.1339 44mm 70mm
3.45mm 0.1358 44mm 70mm
3.5mm 0.1378 44mm 70mm
3.55mm 0.1397 48mm 70mm
3.6mm 0.1417 48mm 70mm
3.65mm 0.1437 48mm 70mm
3.7mm 0.1457 48mm 70mm
3.75mm 0.1476 48mm 75mm
3.8mm 0.1496 48mm 75mm
3.85mm 0.1516 51mm 75mm
3.9mm 0.1535 51mm 75mm
3.95mm 0.1555 51mm 75mm
4mm 0.1575 54mm 75mm
4.05mm 0.1594 54mm 75mm
4.1mm 0.1614 54mm 75mm
4.2mm 0.1654 54mm 75mm
4.25mm 0.1673 54mm 80mm
4.3mm 0.1693 54mm 80mm
4.35mm 0.1713 54mm 80mm
4.4mm 0.1732 56mm 80mm
4.5mm 0.1772 56mm 80mm
4.6mm 0.1811 56mm 80mm
4.65mm 0.1831 56mm 80mm
4.7mm 0.185 59mm 80mm
4.75mm 0.187 59mm 86mm
4.8mm 0.189 59mm 86mm
4.85mm 0.1909 62mm 86mm
4.9mm 0.1929 62mm 86mm
5mm 0.1969 62mm 86mm
5.1mm 0.2008 62mm 86mm
5.2mm 0.2047 64mm 86mm
5.25mm 0.2067 64mm 86mm
5.3mm 0.2087 64mm 86mm
5.4mm 0.2126 64mm 93mm
5.5mm 0.2165 64mm 93mm
5.6mm 0.2205 67mm 93mm
5.7mm 0.2244 67mm 93mm
5.75mm 0.2264 67mm 93mm
5.8mm 0.2283 67mm 93mm
5.9mm 0.2323 67mm 93mm
6mm 0.2362 70mm 93mm
6.1mm 0.2402 70mm 101mm
6.2mm 0.2441 70mm 101mm
6.25mm 0.2461 70mm 101mm
6.3mm 0.248 70mm 101mm
6.4mm 0.252 73mm 101mm
6.5mm 0.2559 73mm 101mm
6.6mm 0.2598 73mm 101mm
6.7mm 0.2638 73mm 101mm
6.75mm 0.2657 73mm 109mm
6.8mm 0.2677 73mm 109mm
6.9mm 0.2717 73mm 109mm
7mm 0.2756 73mm 109mm
7.1mm 0.2795 75mm 109mm
7.2mm 0.2835 75mm 109mm
7.25mm 0.2854 75mm 109mm
7.3mm 0.2874 75mm 109mm
7.4mm 0.2913 78mm 109mm
7.5mm 0.2953 78mm 109mm
7.6mm 0.2992 78mm 117mm
7.7mm 0.3031 81mm 117mm
7.75mm 0.3051 81mm 117mm
7.8mm 0.3071 81mm 117mm
7.9mm 0.311 81mm 117mm
8mm 0.315 81mm 117mm
8.1mm 0.3189 84mm 117mm
8.2mm 0.3228 84mm 117mm
8.25mm 0.3248 84mm 117mm
8.3mm 0.3268 84mm 117mm
8.4mm 0.3307 87mm 117mm
8.5mm 0.3346 87mm 117mm
8.6mm 0.3386 87mm 125mm
8.7mm 0.3425 87mm 125mm
8.75mm 0.3445 87mm 125mm
8.8mm 0.3465 89mm 125mm
8.9mm 0.3504 89mm 125mm
9mm 0.3543 89mm 125mm
9.1mm 0.3583 89mm 125mm
9.2mm 0.3622 92mm 125mm
9.25mm 0.3642 92mm 125mm
9.3mm 0.3661 92mm 125mm
9.4mm 0.3701 92mm 125mm
9.5mm 0.374 92mm 125mm
9.6mm 0.378 95mm 133mm
9.7mm 0.3819 95mm 133mm
9.75mm 0.3839 95mm 133mm
9.8mm 0.3858 95mm 133mm
9.9mm 0.3898 95mm 133mm
10mm 0.3937 95mm 133mm
10.2mm 0.4016 98mm 133mm
10.25mm 0.4035 98mm 133mm
10.5mm 0.4134 98mm 133mm
10.7mm 0.4213 100mm 142mm
10.75mm 0.4232 101mm 142mm
10.8mm 0.4252 103mm 142mm
11mm 0.4331 103mm 142mm
11.5mm 0.4528 106mm 142mm
11.7mm 0.4606 110mm 142mm
12mm 0.4724 111mm 151mm
12.5mm 0.4921 114mm 151mm
12.8mm 0.5039 114mm 151mm
13mm 0.5118 114mm 151mm
13.5mm 0.5315 122mm 160mm
14mm 0.5512 122mm 160mm
14.5mm 0.5709 122mm 169mm
15mm 0.5906 132mm 169mm
15.5mm 0.6102 132mm 178mm
16mm 0.6299 132mm 178mm
16.5mm 0.6496 132mm 184mm
17mm 0.6693 143mm 184mm
17.5mm 0.689 143mm 191mm
18mm 0.7087 145mm 191mm
18.5mm 0.7283 149mm 198mm
19mm 0.748 149mm 198mm
19.5mm 0.7677 154mm 205mm
20mm 0.7874 154mm 205mm