The form below allows to transform on-line coordinates (position and velocity) between realisations (ETRFxx) of the European Terrestrial Reference System (ETRS89) and realizations (ITRFyy) of the International Terrestrial Reference System (ITRS). In case input and output coordinates are requested at different epochs, then station velocities are mandatory.
For transformations to and from the Galileo Terrestrial Reference Frame (GTRF), use ITRF. GTRF is aligned to current versions of the ITRF.

Explanation and examples are available from the following tutorial.

 Input 
Frame :
Epoch :
.
 Output 
Frame :
Epoch :
.
 Options 
show intermediate steps Change epoch format:
Updates
  • 29 July 2019: Correction of bug in transformation from ITRF92 to ETRF92. Thanks to Dave Mann from Gardline Limited for notifying us of this problem.
  • 29 July 2019: Correction of incorrect frame name in intermediate print (not affecting final results).
  • 11 Jan. 2019: Correction of bug in transformation from ETRF2005 to all other systems (except to ITRF2005). Thanks to Yurii Lukianchenko from Lviv Polytechnic National university for notifying us of this problem.
  • 07 Nov. 2017: Added transformations from and to ETRF2005 and ETRF2014
  • 04 Apr. 2016: Added transformations from and to ITRF2014
  • 13 Apr. 2015: Correction of incorrect frame name in intermediate print (not affecting final results)
  • 20 Sep. 2012: Use new subroutine PRINTSTEP to print intermediary results
  • 30 Mar. 2012: Correction of bug in transformation from ETRS89 to ITRS when different in and out epochs
  • 06 Dec. 2010: Added transformation from and to ITRF2008
  • 16 Apr. 2010: Added transformations from and to ETRF89, ETRF90, ETRF91, ETRF92, ETRF93,ITRF88, ITRF89, ITRF90, ITRF91, ITRF92, ITRF93
  • 06 Jan. 2010: Correction of bug in transformation from ETRF2000 to ITRF2000
References