Built-in Datums

The following is a list of the datums built in to Global Mapper and the transformation parameters used to convert those datums. All parameters are given with respect to transforming from the given datum to WGS-84.

Datum Name Ellipsoid Name dX (m) dY (m) dZ (m) rX (as) rY (as) rZ (as) Scale (x 10^-6)
ADINDAN Clarke 1880 -162.00 -12.00 206.00 N/A N/A N/A N/A
AIN EL ABD (BAHRAIN) International 1909 (Hayford/Intl 1924) -150.00 -250.00 -1.00 N/A N/A N/A N/A
AIN EL ABD (SAUDI ARABIA) International 1909 (Hayford/Intl 1924) -143.00 -236.00 7.00 N/A N/A N/A N/A
ARATU (BRAZIL) International 1909 (Hayford/Intl 1924) -158.00 315.00 -148.00 N/A N/A N/A N/A
ARC1950 Clarke 1880 -143.00 -90.00 -294.00 N/A N/A N/A N/A
ARC1960 Clarke 1880 -160.00 -8.00 -300.00 N/A N/A N/A N/A
ASTRO B4 (SOROL ATOLL) International 1909 (Hayford/Intl 1924) 114.00 -116.00 -333.00 N/A N/A N/A N/A
ASTRO BEACON International 1909 (Hayford/Intl 1924) 145.00 75.00 -272.00 N/A N/A N/A N/A
ASTRO DOS 71/4 International 1909 (Hayford/Intl 1924) -320.00 550.00 -494.00 N/A N/A N/A N/A
ASTRONOMIC STATION 1952 International 1909 (Hayford/Intl 1924) 124.00 -234.00 -25.00 N/A N/A N/A N/A
ATS77 (NOVA SCOTIA) ATS77 Uses NTv2 Conversion Tables
AUSTRALIAN GEODETIC 1966 Australian National Uses NTv2 Conversion Tables
AUSTRALIAN GEODETIC 1984 Australian National Uses NTv2 Conversion Tables
BD72 (BELGIUM 1972) International 1909 (Hayford/Intl 1924) -99.06 53.32 -112.49 0.4190 -0.8300 1.8850 -1.00000
BEIJING 1954 Krassovsky 22.00 -118.00 -30.50 N/A N/A N/A N/A
BOGOTA OBSERVATORY International 1909 (Hayford/Intl 1924) 307.00 304.00 -318.00 N/A N/A N/A N/A
BUKIT RIMPAH Bessel 1841 -384.00 664.00 -48.00 N/A N/A N/A N/A
CAMACUPA Clarke 1880 (RGS) -41.06 -374.56 -226.29 0.0000 0.0000 0.5540 0.21900
CAMP AREA ASTRO International 1909 (Hayford/Intl 1924) -104.00 -129.00 239.00 N/A N/A N/A N/A
CAMPO INCHAUSPE (ARGENTINA) International 1909 (Hayford/Intl 1924) -148.00 136.00 90.00 N/A N/A N/A N/A
CAPE Clarke 1880 -136.00 -108.00 -292.00 N/A N/A N/A N/A
CARTHAGE Clarke 1880 -263.00 6.00 431.00 N/A N/A N/A N/A
CHAD (WG1998) WGS72 -2.64 15.36 0.94 N/A N/A N/A N/A
CORREGO ALEGRE (BRAZIL) International 1909 (Hayford/Intl 1924) -206.00 172.00 -6.00 N/A N/A N/A N/A
D-48 SLOVENIA Bessel 1841 668.00 -205.00 472.00 N/A N/A N/A N/A
DEALUL PISCULUI 1970 Krassovsky 28.00 -121.00 -77.00 N/A N/A N/A N/A
DUTCH (RD) Bessel 1841 565.04 49.91 465.84 -0.4094 0.3597 -1.8685 4.07720
EASTER ISLAND 1967 International 1909 (Hayford/Intl 1924) 211.00 147.00 111.00 N/A N/A N/A N/A
ED50 International 1909 (Hayford/Intl 1924) -87.00 -98.00 -121.00 N/A N/A N/A N/A
ED50 (ENGLAND) International 1909 (Hayford/Intl 1924) -86.00 -96.00 -120.00 N/A N/A N/A N/A
ED50 (FINLAND/NORWAY) International 1909 (Hayford/Intl 1924) -87.00 -95.00 -120.00 N/A N/A N/A N/A
ED50 (GREECE) International 1909 (Hayford/Intl 1924) -84.00 -95.00 -130.00 N/A N/A N/A N/A
ED50 (SICILY) International 1909 (Hayford/Intl 1924) -97.00 -88.00 -135.00 N/A N/A N/A N/A
ED50 (SPAIN/PORTUGAL) International 1909 (Hayford/Intl 1924) Uses NTv2 Conversion Tables
EGYPT 1907 Helmert 1906 -130.00 110.00 -13.00 N/A N/A N/A N/A
ETRS89 GRS 1980 0.00 0.00 0.00 N/A N/A N/A N/A
EUROPEAN DATUM 1979 International 1967 -86.00 -98.00 -119.00 N/A N/A N/A N/A
FINLAND/HAYFORD International 1909 (Hayford/Intl 1924) -78.00 -231.00 -97.00 N/A N/A N/A N/A
GDA 94 (AUSTRALIAN GEODETIC 1994) GRS 1980 0.00 0.00 0.00 N/A N/A N/A N/A
GGRS87 (GREECE) GRS 1980 -199.87 74.79 246.62 N/A N/A N/A N/A
GOOGLE MAPS (SPHERE RADIUS 6378137) Sphere Radius 6378137 m 0.00 0.00 0.00 N/A N/A N/A N/A
GRS80 ELLIPSOID GRS 1980 0.00 0.00 0.00 N/A N/A N/A N/A
GUAM 1963 Clarke 1866 -100.00 -248.00 259.00 N/A N/A N/A N/A
HARTEBEESTHOEK 1994 (S. AFRICA) GRS 1980 0.00 0.00 0.00 N/A N/A N/A N/A
HERMANNSKOGEL Bessel 1841 653.00 -212.00 449.00 N/A N/A N/A N/A
HJORSEY 1955 International 1909 (Hayford/Intl 1924) -73.00 46.00 -86.00 N/A N/A N/A N/A
HONG KONG 1963 International 1909 (Hayford/Intl 1924) -156.00 -271.00 -189.00 N/A N/A N/A N/A
HU TZU SHAN International 1909 (Hayford/Intl 1924) -634.00 -549.00 -201.00 N/A N/A N/A N/A
HUNGARIAN DATUM 1972 GRS 1967 (Indonesia 1974) 52.68 -71.19 -13.98 -0.3120 -0.1063 -0.3729 1.01910
INDIAN (BANGLADESH) Everest 1830 289.00 734.00 257.00 N/A N/A N/A N/A
INDIAN (MEAN VALUE) Everest 1830 173.00 750.00 264.00 N/A N/A N/A N/A
INDIAN (NEPAL) Everest 1956 295.00 736.00 257.00 N/A N/A N/A N/A
INDIAN (THAILAND) Everest 1830 214.00 836.00 303.00 N/A N/A N/A N/A
INDIAN 1954 Everest 1830 217.00 823.00 299.00 N/A N/A N/A N/A
INDIAN 1975 Everest 1830 210.00 814.00 289.00 N/A N/A N/A N/A
INDONESIA 1974 GRS 1967 (Indonesia 1974) -24.00 -15.00 5.00 N/A N/A N/A N/A
IRELAND 1965 Modified Airy 506.00 -122.00 611.00 N/A N/A N/A N/A
IRELAND 1965 (1975 ADJUSTMENT) Modified Airy 482.50 -130.60 564.60 -1.0420 -0.2140 -0.6310 8.15000
ISTS 073 ASTRO International 1909 (Hayford/Intl 1924) 208.00 -435.00 -229.00 N/A N/A N/A N/A
KERTAU 1948 Everest 1830 -11.00 851.00 5.00 N/A N/A N/A N/A
KKJ (FINNISH GRID) International 1909 (Hayford/Intl 1924) -75.00 -230.00 -89.00 N/A N/A N/A N/A
KOREAN GEODETIC DATUM (KGD) GRS 1980 0.00 0.00 0.00 N/A N/A N/A N/A
LEIGON (GHANA) Clarke 1880 -130.00 29.00 364.00 N/A N/A N/A N/A
LISBON/LISBOA 1937 (DLx) International 1909 (Hayford/Intl 1924) -288.88 -91.74 126.24 -1.6910 0.4100 -0.2110 -4.59800
LUREF (LUXEMBOURG) International 1909 (Hayford/Intl 1924) Uses Linear Shift
LUZON (PHILIPPINES) Clarke 1866 -133.00 -77.00 -51.00 N/A N/A N/A N/A
M'PORALOKO (GABON) Clarke 1880 -80.70 -132.50 41.10 N/A N/A N/A N/A
MERCHICH (MOROCCO) Clarke 1880 31.00 146.00 47.00 N/A N/A N/A N/A
MGI AUSTRIA Bessel 1841 577.33 90.13 463.92 5.1370 1.4740 5.2970 2.42320
MINNA (CAMEROON) Clarke 1880 -81.00 -84.00 115.00 N/A N/A N/A N/A
MINNA (NIGERIA) Clarke 1880 -92.00 -93.00 122.00 N/A N/A N/A N/A
NAD27 Clarke 1866 Automatically Uses Appropriate Specialization for Location
NAD27 (ALASKA) Clarke 1866 Uses NADCON Conversion Tables
NAD27 (ALEUTIAN ISLANDS EAST) Clarke 1866 Uses NADCON Conversion Tables
NAD27 (ALEUTIAN ISLANDS WEST) Clarke 1866 Uses NADCON Conversion Tables
NAD27 (BAHAMAS) Clarke 1866 -4.00 154.00 178.00 N/A N/A N/A N/A
NAD27 (CANADA) Clarke 1866 Uses NTv2 Conversion Tables
NAD27 (CANAL ZONE) Clarke 1866 0.00 125.00 201.00 N/A N/A N/A N/A
NAD27 (CARIBBEAN) Clarke 1866 -7.00 152.00 178.00 N/A N/A N/A N/A
NAD27 (CENTRAL AMERICA) Clarke 1866 0.00 125.00 194.00 N/A N/A N/A N/A
NAD27 (CONUS) Clarke 1866 Uses NADCON Conversion Tables
NAD27 (CUBA) Clarke 1866 -9.00 152.00 178.00 N/A N/A N/A N/A
NAD27 (GREENLAND) Clarke 1866 11.00 114.00 195.00 N/A N/A N/A N/A
NAD27 (MEXICO) Clarke 1866 -12.00 130.00 190.00 N/A N/A N/A N/A
NAD27 (SAN SALVADOR) Clarke 1866 1.00 140.00 165.00 N/A N/A N/A N/A
NAD27 (YUMA PROVING GROUNDS) Clarke 1866 -5.66 145.93 182.73 N/A N/A N/A N/A
NAD83 GRS 1980 0.00 0.00 0.00 N/A N/A N/A N/A
NAD83 (ALABAMA HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (ARIZONA HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (ARKANSAS HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (CALIFORNIA NORTH HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (CALIFORNIA SOUTH HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (COLORADO HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (FLORIDA HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (GEORGIA HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (HAWAII HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (ILLINOIS HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (INDIANA HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (IOWA HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (KANSAS HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (KENTUCKY HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (LOUISIANA HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (MAINE HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (MARYLAND-DELAWARE HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (MICHIGAN HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (MINNESOTA HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (MISSISSIPPI HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (MISSOURI HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (MONTANA EAST HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (MONTANA WEST-IDAHO HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (NEBRASKA HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (NEVADA HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (NEW ENGLAND HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (NEW JERSEY HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (NEW MEXICO HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (NEW YORK HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (NORTH DAKOTA HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (OHIO HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (OKLAHOMA HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (PENNSYLVANIA HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (PUERTO RICO/VIRGIN ISLANDS HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (SOUTH DAKOTA HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (TENNESSEE HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (TEXAS EAST HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (TEXAS WEST HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (UTAH HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (VIRGINIA HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (WASHINGTON-OREGON HPGN) GRS 1980 0.00 0.00 0.00 N/A N/A N/A N/A
NAD83 (WEST VIRGINIA HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (WISCONSIN HPGN) GRS 1980 Uses NADCON Conversion Tables
NAD83 (WYOMING HPGN) GRS 1980 Uses NADCON Conversion Tables
NAHRWAN (UAE) Clarke 1880 -249.00 -156.00 381.00 N/A N/A N/A N/A
NEW ISRAELI DATUM (NID) GRS 1980 -23.50 -18.19 -17.53 -0.3000 -1.8400 1.6400 5.43000
NGO 1948 (GREENWICH MERIDIAN) Bessel (Modified) 278.30 93.00 474.50 7.8890 0.0500 -6.6100 6.21000
NGO 1948 (OSLO MERIDIAN) Bessel (Modified) 278.30 93.00 474.50 7.8890 0.0500 -6.6100 6.21000
NORTH SAHARA 1959 Clarke 1880 -186.00 -93.00 310.00 N/A N/A N/A N/A
NTF FRANCE (GREENWICH MERIDIAN) Clarke 1880 Uses Grid Shift File
NTF FRANCE (PARIS MERIDIAN) Clarke 1880 Uses Grid Shift File
NZGD2000 GRS 1980 0.00 0.00 0.00 N/A N/A N/A N/A
NZGD49 International 1909 (Hayford/Intl 1924) Uses NTv2 Conversion Tables
OBSERVATORIO 1966 International 1909 (Hayford/Intl 1924) -425.00 -169.00 81.00 N/A N/A N/A N/A
OLD HAWAIIAN MEAN Clarke 1866 Uses NADCON Conversion Tables
OLD ISRAELI DATUM (OID) Clarke 1880 (Palestine) -275.72 94.78 340.90 -8.0010 -4.4203 -11.8210 -12.78000
OMAN Clarke 1880 -346.00 -1.00 224.00 N/A N/A N/A N/A
ORDNANCE SURVEY 1936 (OSGB36) Airy Uses NTv2 Conversion Tables
PICO DE LAS NIEVES International 1909 (Hayford/Intl 1924) -307.00 -92.00 127.00 N/A N/A N/A N/A
POINTE NOIRE 1948 (CONGO) Clarke 1880 -148.00 51.00 -291.00 N/A N/A N/A N/A
PORTUGESE 1973 (DATUM 73) International 1909 (Hayford/Intl 1924) -239.75 88.18 30.49 0.2630 0.0820 1.2110 2.22900
POSGAR94 (ARGENTINA) GRS 1980 0.00 0.00 0.00 N/A N/A N/A N/A
POTSDAM/DHDN (GERMANY) Bessel 1841 598.10 73.70 418.20 0.2020 0.0450 -2.4550 6.70000
PROVISIONAL SOUTH CHILEAN International 1909 (Hayford/Intl 1924) 16.00 196.00 93.00 N/A N/A N/A N/A
PSAD56 (PROV. S. AMERICAN 1956) International 1909 (Hayford/Intl 1924) -288.00 175.00 -376.00 N/A N/A N/A N/A
PUERTO RICO Clarke 1866 Uses NADCON Conversion Tables
PULKOVO 1942 Krassovsky 28.00 -130.00 -95.00 N/A N/A N/A N/A
QND95 (QATAR) International 1909 (Hayford/Intl 1924) -119.43 -303.66 -11.00 1.1643 0.1745 1.0966 3.65706
QORNOQ International 1909 (Hayford/Intl 1924) 164.00 138.00 -189.00 N/A N/A N/A N/A
REUNION ISLAND International 1909 (Hayford/Intl 1924) 94.00 -948.00 -1262.00 N/A N/A N/A N/A
RGF-93 GRS 1980 0.00 0.00 0.00 N/A N/A N/A N/A
ROME 1940 International 1909 (Hayford/Intl 1924) -225.00 -65.00 9.00 N/A N/A N/A N/A
RT90 Bessel 1841 414.10 41.30 603.10 -0.8550 2.1410 -7.0230 0.00000
S-42 ALBANIA Krassovsky 24.00 -130.00 -92.00 N/A N/A N/A N/A
S-42 CZECHOSLOVAKIA Krassovsky 26.00 -121.00 -78.00 N/A N/A N/A N/A
S-42 HUNGARY Krassovsky 28.00 -121.00 -77.00 N/A N/A N/A N/A
S-42 KAZAKHSTAN Krassovsky 15.00 -130.00 -84.00 N/A N/A N/A N/A
S-42 LATVIA Krassovsky 24.00 -124.00 -82.00 N/A N/A N/A N/A
S-42 POLAND Krassovsky 23.00 -124.00 -82.00 N/A N/A N/A N/A
S-42 ROMANIA Krassovsky -5.20 -126.75 -97.08 0.3160 0.4470 0.1340 0.99999
S-JTSK (CZECH REPUBLIC) Bessel 1841 570.80 85.70 462.80 4.9980 1.5870 5.2610 3.56000
SAO BRAZ International 1909 (Hayford/Intl 1924) -203.00 141.00 53.00 N/A N/A N/A N/A
SCHWARZECK (NAMIBIA) Bessel 1841 616.00 97.00 -251.00 N/A N/A N/A N/A
SOLOMON 1968 (GUX 1 ASTRO) International 1909 (Hayford/Intl 1924) 252.00 -209.00 -751.00 N/A N/A N/A N/A
SOUTH AMERICAN 1969 South America 1969 -57.00 1.00 -41.00 N/A N/A N/A N/A
SOUTHEAST BASE International 1909 (Hayford/Intl 1924) -499.00 -249.00 314.00 N/A N/A N/A N/A
SOUTHWEST BASE International 1909 (Hayford/Intl 1924) -104.00 167.00 -38.00 N/A N/A N/A N/A
SWISS GRID (CH1903) Bessel 1841 674.37 15.06 405.35 N/A N/A N/A N/A
TANANARIVE 1925 (GREENWICH) International 1909 (Hayford/Intl 1924) -189.00 -242.00 -91.00 N/A N/A N/A N/A
TANANARIVE 1925 (PARIS) International 1909 (Hayford/Intl 1924) -189.00 -242.00 -91.00 N/A N/A N/A N/A
TIMBALAI 1948 Everest 1830 (1967 Definition) -679.00 669.00 -48.00 N/A N/A N/A N/A
TOKYO Bessel 1841 -128.00 481.00 664.00 N/A N/A N/A N/A
WGS72 WGS72 0.00 0.00 -4.50 N/A N/A N/A N/A
WGS84 WGS84 0.00 0.00 0.00 N/A N/A N/A N/A
YACARE (URAGUAY) International 1909 (Hayford/Intl 1924) -155.00 171.00 37.00 N/A N/A N/A N/A
ZANDERIJ (SURINAME) International 1909 (Hayford/Intl 1924) -265.00 120.00 -358.00 N/A N/A N/A N/A