EPSG:3997 — WGS 84 / Dubai Local TM
WGS 84 / Dubai Local TM (EPSG:3997) — a Projected (metres) system on the WGS84 datum, used in United Arab Emirates. Parameters, proj4, WKT, accuracy ±0.1 m, plus a free…
At a glance
- EPSG
- 3997
- Name
- WGS 84 / Dubai Local TM
- Kind
- Projected (metres)
- Family
- Transverse Mercator (belt)
- Ellipsoid
- WGS84
- Accuracy
- ±0.1 m (vs PROJ)
- Countries
- United Arab Emirates
Area of use
| West | 54.84° |
| South | 24.85° |
| East | 55.55° |
| North | 25.34° |
Projection parameters
| Projection | tmerc |
| Latitude of origin | 0 |
| Central meridian | 55.3333333333333 |
| Scale factor | 1 |
| False easting | 500000 |
| False northing | 0 |
| Datum | WGS84 |
| Units | m |
+proj=tmerc +lat_0=0 +lon_0=55.3333333333333 +k=1 +x_0=500000 +y_0=0 +datum=WGS84 +units=m +no_defs
PROJCS["WGS 84 / Dubai Local TM",GEOGCS["GCS_WGS 84 / Dubai Local TM",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137,298.257223563],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000],PARAMETER["False_Northing",0],PARAMETER["Central_Meridian",55.3333333333333],PARAMETER["Scale_Factor",1],PARAMETER["Latitude_Of_Origin",0],UNIT["Meter",1],AUTHORITY["EPSG","3997"]]
Sample conversion
Centre of the area of use: WGS84 55.19500, 25.09500 → EPSG:3997 486045.986, 2776584.805
Values are within ±0.1 m at the test point.
About the Transverse Mercator (belt) family
WGS 84 / Dubai Local TM is a Transverse Mercator belt — a national or cadastral grid in metres, conformal (angles are preserved), with its own central meridian and scale factor. Egypt's Red/Purple/Blue belts, the Levant grids, and many Gulf cadastral systems are of this kind.
Two things decide whether your coordinates land correctly: the exact belt (central meridian) and the datum. Mixing a coordinate from one belt into another, or ignoring the datum shift to WGS 84, is the usual cause of a systematic offset in imported survey data.
Related systems
- EPSG:4326 — WGS 84
- EPSG:32628 — WGS 84 / UTM zone 28N
- EPSG:32629 — WGS 84 / UTM zone 29N
- EPSG:32630 — WGS 84 / UTM zone 30N
- EPSG:32631 — WGS 84 / UTM zone 31N
- EPSG:32632 — WGS 84 / UTM zone 32N
- EPSG:32639 — WGS 84 / UTM zone 39N
- EPSG:32640 — WGS 84 / UTM zone 40N
Useful links: Converter · Batch converter · File converter
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FAQ
- What is EPSG:3997?
- It is the coordinate system “WGS 84 / Dubai Local TM”, a Projected (metres) system in the Transverse Mercator (belt) family, identified worldwide by the code EPSG:3997.
- What datum does it use, and how accurate is it?
- It is based on the WGS84 ellipsoid with no default transform to WGS84 (ballpark). The residual at the test point is about ±0.1 m versus PROJ; for centimetre work use a geodetic adjustment service.
- Where is this system used?
- It is used in United Arab Emirates. This page shows its area of use as a coordinate rectangle above.
- How do I convert EPSG:3997 to WGS84?
- Use the free coordinate converter above (preloaded with this system) to convert to WGS84, UTM, or any other system, within a ±0.1 m residual.
You may also need: Arab-world coordinate converter · Surveying file format converter · Batch coordinate file converter