QtProj
coordinate transformation tool by proj4 and Qt
Depends
Example
SRC
+proj=tmerc +lat_0=0 +lon_0=39 +k=1 +x_0=134156.988 +y_0=-6032524.376 +ellps=krass +towgs84=24.83,-130.97,-81.74,0,0,-0.13,-0.22 +units=m +no_defs
190473.82
229747.11
0
DEST
+proj=longlat
Result
+proj=longlat
56.11910749
40.53684436
0.00000000