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Drill Bit Sizes

Letter To Decimal

 
  Letter Decimal  
Z 0.413
Y 0.404
X 0.397
W 0.386
V 0.377
U 0.368
T 0.358
S 0.348
R 0.339
Q 0.332
p 0.323
O 0.316
N 0.302
M 0.295
L 0.290
K 0.281
J 0.277
I 0.272
H 0.266
G 0.261
F 0.257
E 0.250
D 0.246
C 0.242
B 0.238
A 0.234
 

This drill bit conversion table helps you poke the correct size hole into the material you're working on.