Converting wire wire diameter to gauge size?

What is the formual to do so?

 

if you put copper wirw gauge sizes in google
the first site listed is http://www.powerstream.com/Wire_Size.htm which
gives you a bunch of information on copper wrie

 

There's a handy conversion chart at:

http://www.coilcraft.com/awg.cfm

Cheers

PeteS

 

Wikipedia has a precise AWG formula:
http://en.wikipedia.org/wiki/American_wire_gauge

Unfortunately, it's arranged to convert AWG number to diameter. The
original poster asked for the opposite conversion. Rearranging the
Wikipedia formula to run that way gives:

39 × log (200 × d)
AWG = 36 - --------------------
log 92

where d = diameter in inches.

The equation looks gnarly, but it's mostly constants and can
be simplified to this approximation:

AWG = -9.7 - 19.86 × log d

That's accurate within ±.01 AWG, from 0000 to 50 gauge.

 

--Gauge is *approximately* the reciprocal of the diameter; i.e.
1/8" wire = 8 gauge, etc. I think.

 

Not true, It is close for some gauges but does not hold true across the
board. And how would you determine 0 gauge or 00 or 000?

Here is a link this page has the table...

http://www.powerstream.com/Wire_Size.htm

 

It happens to work for 8 AWG (0.1285") , and reasonably
well in the range right around there, but don't count on this
as a general rule of thumb. For instance:

1/20 = 0.05 but 20 AWG = 0.03196 (nom.) 0.05" wire
(or at least the closest standard gauge to that) would be
16 AWG.

And at the other end, 2 AWG is 0.2576", not 0.5".

And let's not even start to think that 0 AWG has an
infinite diameter...


Bob M.