geo cordinates to mysql wkt

[Euclid Me]

hi,

how do we convert google map latlng coordiantes to utm which mysql understands.

SCENARIO

i click on Innsbruck - the latlng returned by google map api is
lat: 47.2626455432058
lng: 11.394656195068347

For Munchen its
lat: 48.138900363549034
lng: 11.577990545654284

i preserve all the decimal and query the length from Innsbruck to
Munchen

SELECT GLENGTH(GEOMFROMTEXT('LINESTRING(47.2626455432058
11.394656195068347, 48.138900363549034 11.577990545654284)'))

results in - 0.89522845926586

is it as simple as this?

just read this point "Well-Known Text is a format for the textual
representation of geometric objects. The UTM coordinates
of "Innsbruck" in WKT format look like this: POINT(681547.32
5237595.88)"

should i be translating the lat lng to UTM coordinates?
thus saving Innsbruck to a point datatype as POINT(681547.32
5237595.88) rather than POINT(47.2626455432058 11.394656195068347)
and then apply the geom function on the data.

thanks,

px