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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link_in 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 by 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, link_ex 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 TRANSDATpro. 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 TRANSDATpro! 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 TRANSDATpro 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 TRANSDATpro are already prepared for the use of these NTv2 files.

  1. NTv2 solutions sorted alphabetically by continents and countries
  2. link_in Australasian continent
  3. link_in European continent
  4. link_in North American continent
  5. link_in South American continent
  1. Australasian continent link_in Go to Continent Selection
  2. Australia: GDA94_GDA2020_conformal.gsb, GDA2020 <==> GDA94
    Original data: link_ex ICSM GitHub transformation grid repository.
    KilletSoft: link_in Download GDA94_GDA2020_C
  3. Australia: GDA94_GDA2020_conformal_and_distortion.gsb, GDA2020 <==> GDA94
    Original data: link_ex ICSM GitHub transformation grid repository.
    KilletSoft: link_in Download GDA94_GDA2020_CD
  4. Australia: National_84_dd_mm_yy.gsb (A84_NAT.gsb), AGD84 <==> GDA94
    Original data: link_ex ICSM GitHub transformation grid repository.
    KilletSoft: link_in Download A84_NAT
  5. Australia: A66_National_dd_mm_yy.gsb (A66_NAT.gsb), AGD66 <==> GDA94
    Original data: link_ex ICSM GitHub transformation grid repository.
    KilletSoft: link_in Download A66_NAT
  6. New Zealand: NZGD2KGR.gsb, NZGD49 <==> NZGD2000
    Original data: link_ex Land Information New Zealand: Download Geodetic Software.
    KilletSoft: link_in Download NZGD2KGR
  1. European continent link_in Go to Continent Selection
  2. Austria: AT_GIS_GRID.gsb, MGI <==> ETRS89
    Original data: link_ex BEV - Bundesamt für Eich- und Vermessungswesen.
    KilletSoft: link_in Download AT_GIS_GRID
  3. France: NTF_R93.gsb, NTF <==> RGF93
    Original data: link_ex IGN (Institut Géographique National): Projet "Lambert 93".
    KilletSoft: link_in Download NTF_R93
  4. France: FRANCE.gsb, NTF <==> RGF93
    Original data: link_ex Paul Kelly: Creation of NTv2 Grid File for France.
    KilletSoft: link_in Download FRANCE
  5. Germany: BeTA2007.gsb, DHDN90 <==> ETRS89
    Original data: link_ex Bundesamt für Kartographie und Geodäsie.
    KilletSoft: link_in Download BeTA2007
  6. Germany (Baden-Württemberg): BWTA2017.gsb, DHDN90 <==> ETRS89
    Original data: link_ex Landesamt für Geoinformation Baden-Württemberg.
    KilletSoft: link_in Hint about the Download Address
  7. Germany (Bavaria): BY_KanU.gsb (2019), DHDN90 <==> ETRS89
    Original data: link_ex Bayerische Vermessungsverwaltung.
    KilletSoft: link_in Hint about the Download Address
  8. Germany (Bavaria): NTv2-Ba.gsb (2011), DHDN90 <==> ETRS89
    Original data: link_ex Bayerische Vermessungsverwaltung.
    KilletSoft: link_in Download Registration Address
  9. Germany (Berlin): Ntv2berlin.gsb, DHDN90 <==> ETRS89
    Original data: link_ex Senatsverwaltung für Stadtentwicklung und Umwelt Berlin.
    KilletSoft: link_in Download Ntv2berlin (© Senatsverwaltung Berlin)
  10. Germany (Brandenburg): NTv2-BB.gsb, S42/83 <==> ETRS89
    Original data: link_ex Landesvermessung und Geobasisinformation Brandenburg.
    KilletSoft: link_in Download Registration Address
  11. Germany (Bremen): HBTa2010.gsb, DHDN90 <==> ETRS89
    Original data: link_ex GeoInformation Bremen.
    KilletSoft: link_in Download HBTa2010 (© GeoInformation Bremen)
  12. Germany (Hamburg): Beta_FHH_NW.gsb, DHDN90 <==> ETRS89
    Germany (Hamburg): NTv2-HH.gsb, DHDN90 <==> ETRS89
    Original data: link_ex Landesbetrieb Geoinformation und Vermessung Hamburg.
    KilletSoft: link_in Download NTv2 Hamburg (© GeoInformation Hamburg)
  13. Germany (Hesse): HeTA2010.gsb, DHDN90 <==> ETRS89
    Original data: link_ex HVBG - Hessische Verwaltung für Bodenmanagement und Geoinformation.
    KilletSoft: link_in Download HeTA2010 (© HVBG)
  14. Germany (Mecklenburg-Western Pomerania): MVTR2010.gsb, RD83 <==> ETRS89
    Germany (Mecklenburg-Western Pomerania): MVTRS4283.gsb, S42/83 <==> ETRS89
    Original data: link_ex DVZ Datenverwaltumszentrum Mecklenburg-Vorpommern GmbH.
    KilletSoft: link_in Download Ntv2 Mecklenburg-Western Pomerania (© DVZ MV GmbH)
  15. Germany (Saarland): SeTa2009.gsb, DHDN90 <==> ETRS89
    Original data: link_ex LVGL - Landesamt für Vermessung und Geoinformation des Saarlandes.
    KilletSoft: link_in Download SeTa2009
  16. Germany (Saxony): SaeTA2010.gsb (5cm), RD83 <==> ETRS89
    Original data: link_ex GeoSN - Landesvermessung Sachsen.
    KilletSoft: link_in Download SaeTA2010 (© GeoSN)
  17. Germany (Saxony): NTv2_SN.gsb (3cm), RD83 <==> ETRS89
    Original data: link_ex GeoSN - Landesvermessung Sachsen.
    KilletSoft: link_in Download Ntv2_SN (© GeoSN)
  18. Germany (Saxony-Anhalt): NTv2LSBB_LSA.gsb, S42/83 <==> ETRS89
    Original data: link_ex Landesstraßenbaubehörde Sachsen-Anhalt (LSBB).
    KilletSoft: link_in Download NTv2LSBB_LSA (© LSBB)
  19. Germany (Thuringia): NTv2GridTh.gsb, PD83 <==> ETRS89
    Original data: link_ex TLVermGEO - Landesamt für Vermessung und Geoinformation - Thüringen.
    KilletSoft: link_in Download NTv2GridTh (© TLVermGEO)
  20. Great Britain: OSTN02_N.gsb, OSGB36 <==> ETRS89
    Original data: link_ex Ordnance Survey: OSTN02 - NTv2 format.
    KilletSoft: link_in Download OSTN02
  21. Great Britain: OSTN15_NTv2_ETRStoOSGB.gsb, OSGB36 <==> ETRS89
    Great Britain: OSTN15_NTv2_OSGBtoETRS.gsb, ETRS89 <==> OSGB36
    Original data: link_ex Ordnance Survey: OSTN15 and OSGM15 for developers.
    KilletSoft: link_in Download OSTN15
  22. Great Britain: ENGLAND.gsb, OSGB36 <==> ETRS89
    Original data: link_ex Paul Kelly: OSTN02 in NTv2 format for OSGB36<-->ETRS89.
    KilletSoft: link_in Download ENGLAND
  23. Great Britain: SCOTLAND.gsb, OSGB36 <==> ETRS89
    Original data: link_ex Paul Kelly: OSTN02 in NTv2 format for OSGB36<-->ETRS89.
    KilletSoft: link_in Download SCOTLAND
  24. Hungary: ETRS2EOV.gsb, EOV HD72 <==> ETRS89
    Original data: link_ex 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: link_in Download ETRS2EOV
  25. Italy: NadED50.gsb, ED50 <==> WGS84
    Italy: NadRoma40.gsb, Roma40 <==> WGS84
    Italy: NadRoma40ED50.gsb, Roma40 <==> ED50
    Original data: link_ex GLOBO - Grigliati NTv2 per l'Italia".
    KilletSoft: link_in Download NadRoma40Ed50
  26. 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: link_ex ER Geoportale - Regione Emilia-Romagna".
    KilletSoft: link_in Download Rer_V1A_K2
  27. Netherlands: RDTRANS2018.gsb, RD/NAP <==> ETRS89
    Original data: link_ex Netherlands - Kadaster and Rijkswaterstaat (DID and RDNAP).
    KilletSoft: link_in Download RDTRANS2018
  28. Netherlands: RDTRANS2008.gsb, RD/NAP <==> ETRS89
    Original data: link_ex Netherlands - Kadaster and Rijkswaterstaat (DID and RDNAP).
    KilletSoft: link_in Download RDTRANS2008
  29. Portugal: PT73_E89.gsb, D73 <==> ETRS89
    Original data: link_ex A vida de um Informático.
    KilletSoft: link_in Download PT73_E89
  30. Portugal: PTLX_E89.gsb, DLX <==> ETRS89
    Original data: link_ex A vida de um Informático.
    KilletSoft: link_in Download PTLX_E89
  31. Portugal: PTBL_E89.gsb, B-DLX <==> ETRS89
    Original data: link_ex A vida de um Informático.
    KilletSoft: link_in Download PTBL_E89
  32. Portugal: PTED_E89.gsb, ED50 <==> ETRS89
    Original data: link_ex A vida de um Informático.
    KilletSoft: link_in Download PTED_E89
  33. Spain (Peninsula 2009): PENR2009.gsb (=R2009V2.gsb), ED50 <==> ETRS89
    Original data: link_ex Instituto Geografico Nacional - Ministerio de Fomento.
    KilletSoft: link_in Download PENR2009
  34. Spain (Baleares 2009): BALR2009.gsb, ED50 <==> ETRS89
    Original data: link_ex Instituto Geografico Nacional - Ministerio de Fomento.
    KilletSoft: link_in Download BALR2009
  35. Spain (Pen + Bal 2003): SPED2ET.gsb, ED50 <==> ETRS89
    Original data: link_ex Instituto Geografico Nacional - Ministerio de Fomento.
    KilletSoft: link_in Download SPED2ET
  36. Switzerland: CHENYX06etrs.gsb, CH1903 <==> ETRS89
    Original data: link_ex Bundesamt für Landestopographie swisstopo: CHenyx06etrs.
    KilletSoft: link_in Download CHENYX06etrs
  37. Switzerland: CHENYX06a.gsb, CH1903 <==> CH1903+
    Original data: link_ex Bundesamt für Landestopographie swisstopo: CHenyx06a.
    KilletSoft: link_in Download CHENYX06a
  1. North American continent link_in Go to Continent Selection
  2. United States (HARN/HPGN): xxhpgn.gsb, 49 files, NAD83(HARN) <==> NAD83
    Original data: link_ex OSGeo Download Server: hpgn_ntv2.zip.
    KilletSoft: link_in Download HARN_HPGN_NTV2
  3. Canada: NTV2_0.gsb, NAD27 <==> NAD83
    Original data: link_ex Natural Resources Canada: Canadian Spatial Reference System - NTv2.
    KilletSoft: link_in Download NTV2_0
  4. Canada (Alberta): ABCSRSv4.gsb, NAD83 <==> NAD83(CSRS)
    Original data: link_ex Alberta Environment and Sustainable Resource Development.
    KilletSoft: link_in Download Registration Address
  5. Canada (British Columbia): BC_27_98.gsb, NAD27 <==> NAD83(CSRS98)
    Original data: link_ex GeoBC - Reference Systems and Survey Monuments.
    KilletSoft: link_in Download BC_27_98
  6. Canada (British Columbia): BC_27_05.gsb, NAD27 <==> NAD83(CSRS05)
    Original data: link_ex GeoBC - Reference Systems and Survey Monuments.
    KilletSoft: link_in Download BC_27_05
  7. Canada (British Columbia): BC_93_98.gsb (also BC_CSRS), NAD83(NMIP93) <==> NAD83(CSRS98)
    Original data: link_ex GeoBC - Reference Systems and Survey Monuments.
    KilletSoft: link_in Download BC_93_98
  8. Canada (British Columbia): BC_93_05.gsb, NAD83(NMIP93) <==> NAD83(CSRS05)
    Original data: link_ex GeoBC - Reference Systems and Survey Monuments.
    KilletSoft: link_in Download BC_93_05
  9. Canada (New Brunswick): NB2783V2.gsb, NAD27 <==> NAD83(CSRS)
    Original data: link_ex Service New Brunswick - GeoNB.
    KilletSoft: link_in Download NB2783V2
  10. Canada (New Brunswick): NB7783V2.gsb, ATS77 <==> NAD83(CSRS)
    Original data: link_ex Service New Brunswick - GeoNB.
    KilletSoft: link_in Download NB7783V2
  11. Canada (Nova Scotia): NS7783V2.gsb, ATS77 <==> NAD83(CSRS98)
    Original data: link_ex Geographical Information Sciences Centre.
    KilletSoft: link_in Download NS7783V2
  12. Canada (Nova Scotia): GS7783.gsb, ATS77 <==> NAD83
    Original data: link_ex Geographical Information Sciences Centre.
    KilletSoft: link_in Download GS7783
  13. Canada (Ontario): MAY76V20.gsb, NAD27(1976) <==> NAD83(ORIG)
    Original data: email Ontario Ministry of Natural Resources.
    KilletSoft: link_in Download Registration Address
  14. Canada (Ontario): ON27CSV1.gsb, NAD27(1974) <==> NAD83(CSRS)
    Original data: email Ontario Ministry of Natural Resources.
    KilletSoft: link_in Download Registration Address
  15. Canada (Ontario): ON27CSV1.gsb, NAD27(1976) <==> NAD83(CSRS)
    Original data: email Ontario Ministry of Natural Resources.
    KilletSoft: link_in Download Registration Address
  16. Canada (Ontario): ON83CSV1.gsb, NAD83(ORIG) <==> NAD83(CSRS)
    Original data: email Ontario Ministry of Natural Resources.
    KilletSoft: link_in Download Registration Address
  17. Canada (Prince Edward Island): PE7783V2.gsb, ATS77 <==> NAD83(CSRS98)
    Original data: link_ex PEI Department of Transportation and Infrastructure Renewal.
    KilletSoft: link_in Download PE7783V2
  18. Canada (Quebec): CQ77NA83.gsb (Esri CGQ77-83), NAD27(CGQ77) <==> NAD83
    Original data: link_ex Géoboutique Québec, Ministère des Ressources naturelles.
    KilletSoft: link_in Download CQ77NA83
  19. Canada (Quebec): CQ77CSRS.gsb (Esri CGQ77-98), NAD27(CGQ77) <==> NAD83(CSRS)
    Original data: link_ex Géoboutique Québec, Ministère des Ressources naturelles.
    KilletSoft: link_in Download CQ77CSRS
  20. Canada (Quebec): NA27NA83.gsb (Esri QUE27-83), NAD27 <==> NAD83
    Original data: link_ex Géoboutique Québec, Ministère des Ressources naturelles.
    KilletSoft: link_in Download NA27NA83
  21. Canada (Quebec): NA27CSRS.gsb (Esri QUE27-98), NAD27 <==> NAD83(CSRS)
    Original data: link_ex Géoboutique Québec, Ministère des Ressources naturelles.
    KilletSoft: link_in Download NA27CSRS
  22. Canada (Quebec): NA83CSRS.gsb (Esri NAS83-98), NAD83 <==> NAD83(CSRS)
    Original data: link_ex Géoboutique Québec, Ministère des Ressources naturelles.
    KilletSoft: link_in Download NA83CSRS
  23. Canada (Saskatchewan): SK27-83.gsb, NAD27 <==> NAD83
    Original data: link_ex GeoSask - Saskatchewans Service for Maps and Land Information (Pre-packed Data Gallery).
    KilletSoft: link_in Download SK27-83
  24. Canada (Saskatchewan): SK27-98.gsb, NAD27 <==> NAD83(CSRS98)
    Original data: link_ex GeoSask - Saskatchewans Service for Maps and Land Information (Pre-packed Data Gallery).
    KilletSoft: link_in Download SK27-98
  25. Canada (Saskatchewan): SK83-98.gsb, NAD83 <==> NAD83(CSRS98)
    Original data: link_ex GeoSask - Saskatchewans Service for Maps and Land Information (Pre-packed Data Gallery).
    KilletSoft: link_in Download SK83-98
  1. South American continent link_in Go to Continent Selection
  2. Brazil: CA61_003.gsb, CorregoAlegre1961 <==> SIRGAS2000
    Original data: link_ex IBGE - Instituto Brasileiro de Geografia e Estatística.
    KilletSoft: link_in Download CA61_003
  3. Brazil: CA7072_003.gsb, CorregoAlegre1970/72 <==> SIRGAS2000
    Original data: link_ex IBGE - Instituto Brasileiro de Geografia e Estatística.
    KilletSoft: link_in Download CA7072_003
  4. Brazil: SAD69_003.gsb, SAD69 <==> SIRGAS2000
    Original data: link_ex IBGE - Instituto Brasileiro de Geografia e Estatística.
    KilletSoft: link_in Download SAD69_003
  5. Brazil: SAD96_003.gsb, SAD69(96) <==> SIRGAS2000
    Original data: link_ex IBGE - Instituto Brasileiro de Geografia e Estatística.
    KilletSoft: link_in Download SAD96_003
  6. Venezuela: CANOA_WGS84_mb.gsb, La Canoa <==> WGS84
    Original data: link_ex eye4software - Juan Lucas Domínguez Rubio.
    KilletSoft: link_in 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 link_in from this side.

KilletSoft News In order that you are always well informed about our company, we write actual news, current information and special offers here into this column.
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link_in Read the Worksheet...
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link_in Read the Worksheet...
KilletSoft Logo BY-KanU
Following Baden-Wuerttemberg with its close-meshed NTv2 grid file BWTA2017, the federal state of Bavaria as well has completed extra high-resolution NTv2 files for the transformation of spatial data in real estate cadastres to UTM/ETRS89.
link_in Read the Press Release...
KilletSoft Logo EU Business Award 2018
Award 2018 The EU Business News Magazine from Great Britain has given the "EU Business Award 2018" to KilletSoft. link_pdf Read the Award...
link_in Read the Press Release...
KilletSoft Logo NTv2 files
Geosoftware for inserting area boundaries as Polygonal Validity Scopes in NTv2 files.
link_in Read the Worksheet...
KilletSoft Logo Geodata International
A new release ot "Geodata International" is available. The database contains 282 contry files with Towns and Municipalities, Town Districts, Coordinates, Postal Codes etc.
link_in Read more...
KilletSoft Logo NTv2 Toolbox
The new program NTv2Tools provides tools for analyzing and processing of NTv2 files. link_in Read the Description...
KilletSoft Logo NTv2 files
Geosoftware with Tools for analyzing and processing of NTv2 files.
link_in 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. link_in Read the Description...
KilletSoft Logo Very big NTv2 files
Solutions for problems with large NTv2 files in GIS and Geosoftware link_in Read the Press Release...
KilletSoft Logo GDA2020
The new geodetic Reference System GDA2020 of Australia is supported by TRANSDAT and GeoDLL now. link_in Read the Press Release...
link_in View the list of CRS...
KilletSoft Logo GoogleMaps / OpenStreetMap
KilletSoft converts Geodata for Navigation in free Map Services.
link_in Read the Worksheet...
KilletSoft Logo Quality Analysis
Practice oriented Accuracy Verification of the Software TRANSDAT and GeoDLL with an extremely structured NTv2 grid file.
link_in 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.
link_pdf Certificate TRANSDAT...
link_pdf Certificate ORTWIN...
link_in Read the Press Release...
Author: Dipl.-Ing. Fred Killet
Page name: p_gdln_e.htm
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Period: since August 17, 2019