Venturie sizes?

Hi all. I am not a metal worker, so when you guys talk in tenths, such as .257, I have no idea what it means. Is there a chart somewhere that I can download, that would convert those measurements to a drill bit size? I am also mathematically challenged.

Check out

http://littlemachineshop.com/Reference/reference.php .

Thanks Allan...was exactly what I was looking for!

>Hi all. I am not a metal worker, so when you guys talk in
>tenths, such as .257, I have no idea what it means. Is
>there a chart somewhere that I can download, that would
>convert those measurements to a drill bit size? I am also
>mathematically challenged.

.125=1/8"
.25 = 1/4"
.257=33/128"
.281=9/32"
.3125=5/16"
.3438=11/32"
.357=3/8"
and so one

Scott