EPSG systems

EPSG:24047 Indian 1975 / UTM zone 47N

Projected system (Transverse Mercator) in use: Thailand - onshore and GoT 96°E to102°E. The full definition below, and conversion in one click.

System record
CodeEPSG:24047
NameIndian 1975 / UTM zone 47N
TypeProjected system — Transverse Mercator
Area of use Thailand - onshore and GoT 96°E to102°E
Thailand - onshore west of 102°E plus offshore Gulf of Thailand west of 102°E.
Bounds W 97,34° · S 5,63° · E 102,01° · N 20,46°
Countries Thailand
DatumIndian 1975
Ellipsoid Everest 1830 (1937 Adjustment) a = 6377276.345 m · 1/f = 300.8017
Base geographic system EPSG:4240 — Indian 1975
Unit metre (E east, N north)
Transformation to WGS 84 Indian 1975 to WGS 84 (4) (EPSG:1812) — accuracy 3 m
ScopeEngineering survey, topographic mapping.

Projection parameters

ParameterValueUnit
Latitude of natural origin0degree
Longitude of natural origin99degree
Scale factor at natural origin0.9996unity
False easting500000metre
False northing0metre

proj4 definition

+proj=utm +zone=47 +ellps=evrst30 +units=m +towgs84=293,836,318,0.5,1.6,-2.8,2.1 +no_defs

Paste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:24047.

WKT (ESRI format, the .prj content)

PROJCS["Indian_1975_UTM_Zone_47N",GEOGCS["GCS_Indian_1975",DATUM["D_Indian_1975",SPHEROID["Everest_Adjustment_1937",6377276.345,300.8017]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",99.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]

All systems — Thailand

Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.