UTM to Calc (back)
E: N:
Zone:

    

Easting:
Northing:
CentrMer °
OrgLat °
scale factor  
false easting  m
false northing  m
Ell
semimajor axis a:
m. 		inverse flattening f:
eccentr.:
ecc sq:
Formulas from http://www.posc.org/Epicentre.2_2/DataModel/ExamplesofUsage/eu_cs34h.html