I am conducting an GIS analysis for areas for Germany.
While the OSM map, which I really like to use (copyright issuses etc.) is in WGS-84, all the data from offical map services in Germany come in UTM 32N.
I have no trouble converting them to WGS-84 but I wonder how accurate WGS-84 may be...
QGIS states for UTM32 "best possible accuracy 0,1m" while for WGS-84 "best possible accuracy 2,0m".
I have no idea how big (if there are any) the deviations might be if I use WGS-84. Or am I thinking completely wrong?