![Canadian Spatial Reference System Canadian Spatial Reference System](/web/20061102131512im_/http://www.geod.nrcan.gc.ca/esst_images/csrs_e.jpeg) Natural Resources Canada > Earth Sciences Sector > Priorities > Knowledge-based services > Canadian Spatial Reference System
Canadian Spatial Reference System Online Applications NTv2 - National Transformation Version 2 (NTv2), for converting coordinates between the NAD27 and NAD83 reference systems in Canada.
NTv2 single point processing and batch file processing now available for UTM and Geographic coordinate files.
GSRUG - Geodetic Survey Routine, UTM/TM to/from Geographic coordinate conversion. Compute either Universal Transverse Mercator (UTM) coordinates from the geographic latitude and longitude of a point or the reverse conversion.
INDIR - Geodetic Direct and Inverse Computation. You can perform either geodetic direct or inverse computations. Please note: the Online Demonstration for INDIR is only valid for points in the Northern Hemisphere.
GPS·H - Geoid Height Transformation Program. This Program allows GPS users to transform NAD83/ITRF ellipsoidal heights to orthometric heights compatible to CGVD28 (height above mean sea level).
TRNOBS - may be used to transform geodetic coordinates between NAD83CSRS and all official realizations of the International Terrestrial Reference Frame (ITRF).
CSRS - Precise Point Positioning (PPP) - provides precise GPS coordinates consistent with the Canadian Spatial Reference System (CSRS) and the International Terrestrial Reference Frame (ITRF).
Please note: Available only through the CSRS Online Database.
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