Killet Software Ing.-GbR - short: KilletSoft - is a software company, which was established in the year 1991. The society is divided into the ranges "Geodetic Standard Software", "Development Tools for Geoinformatics" and "International Geodata". The focal trades of the companies supplied by KilletSoft are consulting engineers, GIS developers, Internet marketing, public utilities, logistics, telecommunications, security and public services.
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 Go directly to the download list of the available NTv2 files
NTv2 gridfiles in GSB and GSA file format

NTv2 (National Transformation version 2) datum shifts are done with grid files which comes in a binary format (GSB) and an ASCII format (GSA). It can transform coordinates between two different geodetic reference systems. The transformation provides heigh actuality and does not require ellipsoidal heights.

HARN gridfiles

The geodetic functionslibrary GeoDLL is prepared for coordinate transformations with arbitrary NTv2 gridfiles and with the American HARN gridfiles. But the HARN gridfiles of the U.S. states are available as equivalent NTv2 gridfiles. All by GeoDLL supported NTv2 and HARN gridfiles can be downloaded from this website.

Support of the NTv2 standard the Geodetic Development Kit GeoDLL

The NTv2 method uses binary files to perform accurate datum shifts from one geodetic Reference System to an other. An NTv2 file contains the differences between the two Reference Systems as geographic seconds in a grid. A bilinear interpolation is used to calculate the exact coordinates for a point in the target Reference System.

NTv2 is designed to check multiple grids for the most accurate shift information. An NTv2 file contains a low density base grid (parent). Certain areas such as cities can have high density local grids. The local grids overlay portions of the base grid. If a point is within one of the high density grids, NTv2 will use the high density grid, otherwise, the point falls through to the low density grid.

A description of the NTv2 algorithm can be found in the following sources:

  1. Junkins, D.R., and S.A. Farley, NTv2 Developers Guide; Geodetic Survey Division, Natural Resources Canada, 1995.
  2. Junkins, D.R., and S.A. Farley, NTv2 Users Guide; Geodetic Survey Division, Natural Resources Canada, 1995.
  3. Staatsbetrieb Geobasisinformation und Vermessung Sachsen,  Geobasisinformation und Vermessung.

Download of the NTv2 gridfiles in binary format

Here the NTv2 binary files are listed, which are supported by the geodetic Library GeoDLL and the program TRANSDAT. In the second line always the original source is shown, from which the original NTv2 file can be downloaded and information about the associated geodetic Reference Systems are given. In the third line is a link, from which the NTv2 file can be download direct from the KilletSoft server. It is recommended to use the original NTv2 files from the original sources, because the actuality of the files stored on the KilletSoft server is not guaranteed.

Important notes:
If you want to use the here listed NTv2 files, you must necessarily note the terms and conditions of their authors! All rights and liabilities, resulting from the use of the data, bears solely the user! KilletSoft does not guarantee the accuracy of the data!

The blue marked NTv2 files have been provided by the authors only for use with KilletSoft products. Therefore, they are encrypted and only work with the Geodetic Development Kit GeoDLL and with the program TRANSDAT! These files are special licensed to KilletSoft by their authors.

The red marked NTv2 files can be ordered or purchased only directly from the authors. The Geodetic Development Kit GeoDLL and the program TRANSDAT are already prepared for the use of these NTv2 files. For the registration of the respective NTv2 file with the author KilletSoft presents the Registration Address of the author in a downloadable file.

The orange marked NTv2 files are available only as testdata at time. They can be ordered directly from the authors or can be downloades from their website. The Geodetic Development Kit GeoDLL and the program TRANSDAT are already prepared for the use of these NTv2 files.

    NTv2 solutions sorted alphabetically by continents and countries
  1.  Australasian continent
  2.  European continent
  3.  North American continent
  4.  South American continent
    Australasian continent  Go to Continent Selection
  1. Australia: GDA94_GDA2020_conformal.gsb, GDA2020 <==> GDA94
    Original data:  ICSM GitHub transformation grid repository.
    KilletSoft:  Download GDA94_GDA2020_C
  2. Australia: GDA94_GDA2020_conformal_and_distortion.gsb, GDA2020 <==> GDA94
    Original data:  ICSM GitHub transformation grid repository.
    KilletSoft:  Download GDA94_GDA2020_CD
  3. Australia: National_84_dd_mm_yy.gsb (A84_NAT.gsb), AGD84 <==> GDA94
    Original data:  ICSM GitHub transformation grid repository.
    KilletSoft:  Download A84_NAT
  4. Australia: A66_National_dd_mm_yy.gsb (A66_NAT.gsb), AGD66 <==> GDA94
    Original data:  ICSM GitHub transformation grid repository.
    KilletSoft:  Download A66_NAT
  5. New Zealand: NZGD2KGR.gsb, NZGD49 <==> NZGD2000
    Original data:  Land Information New Zealand: Download Geodetic Software.
    KilletSoft:  Download NZGD2KGR
    European continent  Go to Continent Selection
  1. Austria: AT_GIS_GRID.gsb, MGI <==> ETRS89
    Original data:  BEV - Bundesamt für Eich- und Vermessungswesen.
    KilletSoft:  Download AT_GIS_GRID
  2. France: NTF_R93.gsb, NTF <==> RGF93
    Original data:  IGN (Institut Géographique National): Projet "Lambert 93".
    KilletSoft:  Download NTF_R93
  3. France: FRANCE.gsb, NTF <==> RGF93
    Original data:  Paul Kelly: Creation of NTv2 Grid File for France.
    KilletSoft:  Download FRANCE
  4. Germany: BeTA2007.gsb, DHDN90 <==> ETRS89
    Original data:  Bundesamt für Kartographie und Geodäsie.
    KilletSoft:  Download BeTA2007
  5. Germany (Baden-Württemberg): BWTA2017.gsb, DHDN90 <==> ETRS89
    Original data:  Landesamt für Geoinformation Baden-Württemberg.
    KilletSoft:  Hint about the Download Address
  6. Germany (Bavaria): BY_KanU.gsb, DHDN90 <==> ETRS89
    Original data:  Bayerische Vermessungsverwaltung.
    KilletSoft:  Download URL Testdata
  7. Germany (Bavaria): NTv2-Ba.gsb (2011), DHDN90 <==> ETRS89
    Original data:  Bayerische Vermessungsverwaltung.
    KilletSoft:  Download Registration Address
  8. Germany (Berlin): Ntv2berlin.gsb, DHDN90 <==> ETRS89
    Original data:  Senatsverwaltung für Stadtentwicklung und Umwelt Berlin.
    KilletSoft:  Download Ntv2berlin (© Senatsverwaltung Berlin)
  9. Germany (Brandenburg): NTv2-BB.gsb, S42/83 <==> ETRS89
    Original data:  Landesvermessung und Geobasisinformation Brandenburg.
    KilletSoft:  Download Registration Address
  10. Germany (Bremen): HBTa2010.gsb, DHDN90 <==> ETRS89
    Original data:  GeoInformation Bremen.
    KilletSoft:  Download HBTa2010 (© GeoInformation Bremen)
  11. Germany (Hamburg): Beta_FHH_NW.gsb, DHDN90 <==> ETRS89
    Germany (Hamburg): NTv2-HH.gsb, DHDN90 <==> ETRS89
    Original data:  Landesbetrieb Geoinformation und Vermessung Hamburg.
    KilletSoft:  Download NTv2 Hamburg (© GeoInformation Hamburg)
  12. Germany (Hesse): HeTA2010.gsb, DHDN90 <==> ETRS89
    Original data:  HVBG - Hessische Verwaltung für Bodenmanagement und Geoinformation.
    KilletSoft:  Download HeTA2010 (© HVBG)
  13. Germany (Mecklenburg-Western Pomerania): MVTR2010.gsb, RD83 <==> ETRS89
    Germany (Mecklenburg-Western Pomerania): MVTRS4283.gsb, S42/83 <==> ETRS89
    Original data:  DVZ Datenverwaltumszentrum Mecklenburg-Vorpommern GmbH.
    KilletSoft:  Download Ntv2 Mecklenburg-Western Pomerania (© DVZ MV GmbH)
  14. Germany (Saarland): SeTa2009.gsb, DHDN90 <==> ETRS89
    Original data:  LVGL - Landesamt für Vermessung und Geoinformation des Saarlandes.
    KilletSoft:  Download SeTa2009
  15. Germany (Saxony): SaeTA2010.gsb (5cm), RD83 <==> ETRS89
    Original data:  GeoSN - Landesvermessung Sachsen.
    KilletSoft:  Download SaeTA2010 (© GeoSN)
  16. Germany (Saxony): NTv2_SN.gsb (3cm), RD83 <==> ETRS89
    Original data:  GeoSN - Landesvermessung Sachsen.
    KilletSoft:  Download Ntv2_SN (© GeoSN)
  17. Germany (Saxony-Anhalt): NTv2LSBB_LSA.gsb, S42/83 <==> ETRS89
    Original data:  Landesstraßenbaubehörde Sachsen-Anhalt (LSBB).
    KilletSoft:  Download NTv2LSBB_LSA (© LSBB)
  18. Germany (Thuringia): NTv2GridTh.gsb, PD83 <==> ETRS89
    Original data:  TLVermGEO - Landesamt für Vermessung und Geoinformation - Thüringen.
    KilletSoft:  Download NTv2GridTh (© TLVermGEO)
  19. Great Britain: OSTN02_N.gsb, OSGB36 <==> ETRS89
    Original data:  Ordnance Survey: OSTN02 - NTv2 format.
    KilletSoft:  Download OSTN02
  20. Great Britain: OSTN15_NTv2_ETRStoOSGB.gsb, OSGB36 <==> ETRS89
    Great Britain: OSTN15_NTv2_OSGBtoETRS.gsb, ETRS89 <==> OSGB36
    Original data:  Ordnance Survey: OSTN15 and OSGM15 for developers.
    KilletSoft:  Download OSTN15
  21. Great Britain: ENGLAND.gsb, OSGB36 <==> ETRS89
    Original data:  Paul Kelly: OSTN02 in NTv2 format for OSGB36<-->ETRS89.
    KilletSoft:  Download ENGLAND
  22. Great Britain: SCOTLAND.gsb, OSGB36 <==> ETRS89
    Original data:  Paul Kelly: OSTN02 in NTv2 format for OSGB36<-->ETRS89.
    KilletSoft:  Download SCOTLAND
  23. Hungary: ETRS2EOV.gsb, EOV HD72 <==> ETRS89
    Original data:  Budapesti Müszaki es Gazdasagtudomanyi Egyetem.
    The original file etrs2eov.gsb may contain a bug, better to use the file etrs2eov_kor.gsb, corrected by KilletSoft.
    KilletSoft:  Download ETRS2EOV
  24. Italy: NadED50.gsb, ED50 <==> WGS84
    Italy: NadRoma40.gsb, Roma40 <==> WGS84
    Italy: NadRoma40ED50.gsb, Roma40 <==> ED50
    Original data:  GLOBO - Grigliati NTv2 per l'Italia".
    KilletSoft:  Download NadRoma40Ed50
  25. Italy (Emilia Romagna): RER_AD400_MM_ED50_V1A.gsb, Roma40 <==> ED50
    Italy (Emilia Romagna): RER_AD400_MM_ETRS89_V1A.gsb, Roma40 <==> ETRS89
    Italy (Emilia Romagna): RER_ED50_MM_ETRS89_GPS7_K2.gsb, ED50 <==> ETRS89
    Italy (Emilia Romagna): RER_MM_ED50_GPS7_K2.gsb, Roma40 <==> ED50
    Italy (Emilia Romagna): RER_MM_ETRS89_GPS7_K2.gsb, Roma40 <==> ETRS89
    Original data:  ER Geoportale - Regione Emilia-Romagna".
    KilletSoft:  Download Rer_V1A_K2
  26. Netherlands: RDTRANS2008.gsb, RD/NAP <==> ETRS89
    Original data:  Netherlands - Kadaster and Rijkswaterstaat (DID and RDNAP).
    KilletSoft:  Download RDTRANS2008
  27. Portugal: PT73_E89.gsb, D73 <==> ETRS89
    Original data:  A vida de um Informático.
    KilletSoft:  Download PT73_E89
  28. Portugal: PTLX_E89.gsb, DLX <==> ETRS89
    Original data:  A vida de um Informático.
    KilletSoft:  Download PTLX_E89
  29. Portugal: PTBL_E89.gsb, B-DLX <==> ETRS89
    Original data:  A vida de um Informático.
    KilletSoft:  Download PTBL_E89
  30. Portugal: PTED_E89.gsb, ED50 <==> ETRS89
    Original data:  A vida de um Informático.
    KilletSoft:  Download PTED_E89
  31. Spain (Peninsula 2009): PENR2009.gsb (=R2009V2.gsb), ED50 <==> ETRS89
    Original data:  Instituto Geografico Nacional - Ministerio de Fomento.
    KilletSoft:  Download PENR2009
  32. Spain (Baleares 2009): BALR2009.gsb, ED50 <==> ETRS89
    Original data:  Instituto Geografico Nacional - Ministerio de Fomento.
    KilletSoft:  Download BALR2009
  33. Spain (Pen + Bal 2003): SPED2ET.gsb, ED50 <==> ETRS89
    Original data:  Instituto Geografico Nacional - Ministerio de Fomento.
    KilletSoft:  Download SPED2ET
  34. Switzerland: CHENYX06etrs.gsb, CH1903 <==> ETRS89
    Original data:  Bundesamt für Landestopographie swisstopo: CHenyx06etrs.
    KilletSoft:  Download CHENYX06etrs
  35. Switzerland: CHENYX06a.gsb, CH1903 <==> CH1903+
    Original data:  Bundesamt für Landestopographie swisstopo: CHenyx06a.
    KilletSoft:  Download CHENYX06a
    North American continent  Go to Continent Selection
  1. United States (HARN/HPGN): xxhpgn.gsb, 49 files, NAD83(HARN) <==> NAD83
    Original data:  OSGeo Download Server: hpgn_ntv2.zip.
    KilletSoft:  Download HARN_HPGN_NTV2
  2. Canada: NTV2_0.gsb, NAD27 <==> NAD83
    Original data:  Natural Resources Canada: Canadian Spatial Reference System - NTv2.
    KilletSoft:  Download NTV2_0
  3. Canada (Alberta): ABCSRSv4.gsb, NAD83 <==> NAD83(CSRS)
    Original data:  Alberta Environment and Sustainable Resource Development.
    KilletSoft:  Download Registration Address
  4. Canada (British Columbia): BC_27_98.gsb, NAD27 <==> NAD83(CSRS98)
    Original data:  GeoBC - Reference Systems and Survey Monuments.
    KilletSoft:  Download BC_27_98
  5. Canada (British Columbia): BC_27_05.gsb, NAD27 <==> NAD83(CSRS05)
    Original data:  GeoBC - Reference Systems and Survey Monuments.
    KilletSoft:  Download BC_27_05
  6. Canada (British Columbia): BC_93_98.gsb (also BC_CSRS), NAD83(NMIP93) <==> NAD83(CSRS98)
    Original data:  GeoBC - Reference Systems and Survey Monuments.
    KilletSoft:  Download BC_93_98
  7. Canada (British Columbia): BC_93_05.gsb, NAD83(NMIP93) <==> NAD83(CSRS05)
    Original data:  GeoBC - Reference Systems and Survey Monuments.
    KilletSoft:  Download BC_93_05
  8. Canada (New Brunswick): NB2783V2.gsb, NAD27 <==> NAD83(CSRS)
    Original data:  Service New Brunswick - GeoNB.
    KilletSoft:  Download NB2783V2
  9. Canada (New Brunswick): NB7783V2.gsb, ATS77 <==> NAD83(CSRS)
    Original data:  Service New Brunswick - GeoNB.
    KilletSoft:  Download NB7783V2
  10. Canada (Nova Scotia): NS7783V2.gsb, ATS77 <==> NAD83(CSRS98)
    Original data:  Geographical Information Sciences Centre.
    KilletSoft:  Download NS7783V2
  11. Canada (Nova Scotia): GS7783.gsb, ATS77 <==> NAD83
    Original data:  Geographical Information Sciences Centre.
    KilletSoft:  Download GS7783
  12. Canada (Ontario): MAY76V20.gsb, NAD27(1976) <==> NAD83(ORIG)
    Original data:  Ontario Ministry of Natural Resources.
    KilletSoft:  Download Registration Address
  13. Canada (Ontario): ON27CSV1.gsb, NAD27(1974) <==> NAD83(CSRS)
    Original data:  Ontario Ministry of Natural Resources.
    KilletSoft:  Download Registration Address
  14. Canada (Ontario): ON27CSV1.gsb, NAD27(1976) <==> NAD83(CSRS)
    Original data:  Ontario Ministry of Natural Resources.
    KilletSoft:  Download Registration Address
  15. Canada (Ontario): ON83CSV1.gsb, NAD83(ORIG) <==> NAD83(CSRS)
    Original data:  Ontario Ministry of Natural Resources.
    KilletSoft:  Download Registration Address
  16. Canada (Prince Edward Island): PE7783V2.gsb, ATS77 <==> NAD83(CSRS98)
    Original data:  PEI Department of Transportation and Infrastructure Renewal.
    KilletSoft:  Download PE7783V2
  17. Canada (Quebec): CQ77NA83.gsb (Esri CGQ77-83), NAD27(CGQ77) <==> NAD83
    Original data:  Géoboutique Québec, Ministère des Ressources naturelles.
    KilletSoft:  Download CQ77NA83
  18. Canada (Quebec): CQ77CSRS.gsb (Esri CGQ77-98), NAD27(CGQ77) <==> NAD83(CSRS)
    Original data:  Géoboutique Québec, Ministère des Ressources naturelles.
    KilletSoft:  Download CQ77CSRS
  19. Canada (Quebec): NA27NA83.gsb (Esri QUE27-83), NAD27 <==> NAD83
    Original data:  Géoboutique Québec, Ministère des Ressources naturelles.
    KilletSoft:  Download NA27NA83
  20. Canada (Quebec): NA27CSRS.gsb (Esri QUE27-98), NAD27 <==> NAD83(CSRS)
    Original data:  Géoboutique Québec, Ministère des Ressources naturelles.
    KilletSoft:  Download NA27CSRS
  21. Canada (Quebec): NA83CSRS.gsb (Esri NAS83-98), NAD83 <==> NAD83(CSRS)
    Original data:  Géoboutique Québec, Ministère des Ressources naturelles.
    KilletSoft:  Download NA83CSRS
  22. Canada (Saskatchewan): SK27-83.gsb, NAD27 <==> NAD83
    Original data:  GeoSask - Saskatchewans Service for Maps and Land Information (Pre-packed Data Gallery).
    KilletSoft:  Download SK27-83
  23. Canada (Saskatchewan): SK27-98.gsb, NAD27 <==> NAD83(CSRS98)
    Original data:  GeoSask - Saskatchewans Service for Maps and Land Information (Pre-packed Data Gallery).
    KilletSoft:  Download SK27-98
  24. Canada (Saskatchewan): SK83-98.gsb, NAD83 <==> NAD83(CSRS98)
    Original data:  GeoSask - Saskatchewans Service for Maps and Land Information (Pre-packed Data Gallery).
    KilletSoft:  Download SK83-98
    South American continent  Go to Continent Selection
  1. Brazil: CA61_003.gsb, CorregoAlegre1961 <==> SIRGAS2000
    Original data:  IBGE - Instituto Brasileiro de Geografia e Estatística.
    KilletSoft:  Download CA61_003
  2. Brazil: CA7072_003.gsb, CorregoAlegre1970/72 <==> SIRGAS2000
    Original data:  IBGE - Instituto Brasileiro de Geografia e Estatística.
    KilletSoft:  Download CA7072_003
  3. Brazil: SAD69_003.gsb, SAD69 <==> SIRGAS2000
    Original data:  IBGE - Instituto Brasileiro de Geografia e Estatística.
    KilletSoft:  Download SAD69_003
  4. Brazil: SAD96_003.gsb, SAD69(96) <==> SIRGAS2000
    Original data:  IBGE - Instituto Brasileiro de Geografia e Estatística.
    KilletSoft:  Download SAD96_003
  5. Venezuela: CANOA_WGS84_mb.gsb, La Canoa <==> WGS84
    Original data:  eye4software - Juan Lucas Domínguez Rubio.
    KilletSoft:  Download CANOA_WGS84_mb

The binary NTv2 files, which are downloadable from the KilletSoft Internet site, are ZIP compressed. For unpacking the download files you need an unzip program, which you can download  from this side.

KilletSoft News In order that you always are well informed about our company, we write actual news, current information and special offers here into this column.

KilletSoft Logo NTv2 files
Geosoftware for inserting area boundaries as Polygonal Validity Scopes in NTv2 files.
 Read the Worksheet...

KilletSoft Logo Geodata International
A new release ot "Geodata International" is available since July 2018. The database contains 282 contry files with Towns and Municipalities, Town Districts, Coordinates, Postal Codes etc.
 Read more...

KilletSoft Logo NTv2 Toolbox
The new program NTv2Tools provides tools for analyzing and processing of NTv2 files.  Read the Description...

KilletSoft Logo NTv2 files
Geosoftware with Tools for analyzing and processing of NTv2 files.
 Read the Worksheet...

KilletSoft Logo PolyGonal Validity Scopes
The new program NTv2Poly complements NTv2 files with Polygonal Validity Scopes that are taken from an outline shapefile.  Read the Description...

KilletSoft Logo Very big NTv2 files
Solutions for problems with large NTv2 files in GIS and Geosoftware  Read the Press Release...

KilletSoft Logo GDA2020
The new geodetic Reference System GDA2020 of Australia is supported by TRANSDAT and GeoDLL now.  Read the Press Release...
 View the list of CRS...

KilletSoft Logo BWTA2017
Baden-Wuerttemberg has completed the close-meshed NTv2 grid file for the transformation of geodata in real estate cadastres to UTM/ETRS89.
 Read the Press Release...

KilletSoft Logo GoogleMaps / OpenStreetMap
KilletSoft converts Geodata for Navigation in free Map Services.
 Read the Worksheet...

KilletSoft Logo Quality Analysis
Practice oriented Accuracy Verification of the Software TRANSDAT and GeoDLL with an extremely structured NTv2 grid file.
 Read the Worksheet...

KilletSoft Logo Innovation Award 2016
Award 2016 KilletSoft's geodetic software has won for the second year in succession the Innovation Award from the Initiative Small and Medium Enterprises.
 Certificate TRANSDAT...
 Certificate ORTWIN...
 Read the Press Release...

KilletSoft Logo GeoDLL / TRANSDAT
Proposal for using Polygonal Validity Scopes in NTv2 grid files.
 Read the Worksheet...

KilletSoft Logo Translators wanted!
The programs TRANSDAT and SEVENPAR support language files for the programs interface. Since the language dependent texts are managed in external files,  new languages can be added at any time by creating new language files. Everybody who is interested can translate a new language file into his native language for himself and all users.