Conversion ??? -> UTM (WGS84)

Hi everyone.
I've been involved in a project where the customer asked me to convert
his gis DB in UTM format.
He doesn't know which representation is used, and i'm new to GIS world.
He only said to me that he represents a point with GPS xy coordinates.
I've tried to find the source representation having a xy coordinate
(x=3D5388482, y=3D2547135) for only one known point (41=B047'17.86N,
12=B015'46.35E).
I've tried several conversion tool, for different projections, but I
can't find the exact source representation that could give the lat,
long coordinates i have for this point.

I'm stalled, someone could help me to find the right answer?

Thanks

This is fundamentally impossible without more information. You need to
know what projection system his GPS is set up for; that is probably
whatever is the national or state grid in use with the maps he uses.
There are two things here: to get from latitude/longitude to XY you
need the projection details. You also need to knwo the datum he is
using (and the target datum for your output; UTM does not define one).

I'd see if you can get your hands on the GPS and look to se how it's
set up!

Paul

Are you still having this trouble.?
If so; what software are you using to perform this action.?

It's going to be a matter of trial & error until you find which one to
use.
However if you can describe exactly whare the items are projecting
against something that you know is in the correct projection & I can
help you.

svasi wrote: