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EPSG Library · WGS 84 / UTM zones (north)

EPSG:32643 — WGS 84 / UTM zone 43N

Source: EPSG Dataset via PROJ 9.5.1 · Updated

Summary

EPSG:32643 (WGS 84 / UTM zone 43N) is a projected coordinate reference system on the World Geodetic System 1984 ensemble datum using the Transverse Mercator method, with coordinates in metres. Area of use: Between 72°E and 78°E, northern hemisphere between equator and 84°N, onshore and offshore. The datum is an ensemble with about 2.0 m accuracy, so precise work should name a specific realization.

  • Type: projected
  • Datum: World Geodetic System 1984 ensemble
  • Units: metre
  • Axes: E, N
  • Central meridian: 75°

Definition

EPSG:32643 as published in the EPSG Dataset (PROJ 9.5.1).
PropertyValue
EPSG codeEPSG:32643
NameWGS 84 / UTM zone 43N
TypeProjected CRS
DatumWorld Geodetic System 1984 ensemble (ensemble, accuracy ≈ 2.0 m)
EllipsoidWGS 84 (a = 6,378,137.000 m, 1/f = 298.257224)
Prime meridianGreenwich
Projection methodTransverse Mercator
AxesEasting (E, east, metre); Northing (N, north, metre)
ScopeNavigation and medium accuracy spatial referencing.
Bounding box72° to 78° longitude, 0° to 84° latitude

Area of use

Between 72°E and 78°E, northern hemisphere between equator and 84°N, onshore and offshore. China. India. Kazakhstan. Kyrgyzstan. Maldives. Pakistan. Russian Federation. Tajikistan.

Projection parameters

Transverse Mercator parameters.
ParameterValueUnit
Latitude of natural origin0degree
Longitude of natural origin75degree
Scale factor at natural origin0.9996unity
False easting500,000metre
False northing0metre

Example coordinates

A WGS 84 point at longitude 76.5°, latitude 24.0° (inside the area of use) has these coordinates in EPSG:32643:

Computed with PROJ using the EPSG default operation: axis order change (2D) + UTM zone 43N.
AxisValueUnit
E652,578.355m
N2,655,039.017m

At this point the projection scale factor is 0.99988755 and the grid convergence is +0.610223°.

Open this conversion in the coordinate converter

Definitions and downloads

PROJ string

+proj=utm +zone=43 +datum=WGS84 +units=m +no_defs +type=crs

A PROJ string cannot carry every EPSG detail (axis order, datum ensemble, transformations). Prefer WKT2 or the EPSG code itself.

Proj4js definition used by the converter

+proj=utm +zone=43 +datum=WGS84 +units=m +no_defs

No datum shift is needed: this CRS is on WGS 84 or a datum Proj4js treats as equivalent at the metre level.

WKT2:2019
PROJCRS["WGS 84 / UTM zone 43N", BASEGEOGCRS["WGS 84", ENSEMBLE["World Geodetic System 1984 ensemble", MEMBER["World Geodetic System 1984 (Transit)"], MEMBER["World Geodetic System 1984 (G730)"], MEMBER["World Geodetic System 1984 (G873)"], MEMBER["World Geodetic System 1984 (G1150)"], MEMBER["World Geodetic System 1984 (G1674)"], MEMBER["World Geodetic System 1984 (G1762)"], MEMBER["World Geodetic System 1984 (G2139)"], MEMBER["World Geodetic System 1984 (G2296)"], ELLIPSOID["WGS 84",6378137,298.257223563, LENGTHUNIT["metre",1]], ENSEMBLEACCURACY[2.0]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4326]], CONVERSION["UTM zone 43N", METHOD["Transverse Mercator", ID["EPSG",9807]], PARAMETER["Latitude of natural origin",0, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8801]], PARAMETER["Longitude of natural origin",75, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8802]], PARAMETER["Scale factor at natural origin",0.9996, SCALEUNIT["unity",1], ID["EPSG",8805]], PARAMETER["False easting",500000, LENGTHUNIT["metre",1], ID["EPSG",8806]], PARAMETER["False northing",0, LENGTHUNIT["metre",1], ID["EPSG",8807]]], CS[Cartesian,2], AXIS["(E)",east, ORDER[1], LENGTHUNIT["metre",1]], AXIS["(N)",north, ORDER[2], LENGTHUNIT["metre",1]], USAGE[ SCOPE["Navigation and medium accuracy spatial referencing."], AREA["Between 72°E and 78°E, northern hemisphere between equator and 84°N, onshore and offshore. China. India. Kazakhstan. Kyrgyzstan. Maldives. Pakistan. Russian Federation. Tajikistan."], BBOX[0,72,84,78]], ID["EPSG",32643]]

Downloads

FAQ

What is EPSG:32643?

EPSG:32643 (WGS 84 / UTM zone 43N) is a projected coordinate reference system on the World Geodetic System 1984 ensemble datum using the Transverse Mercator method, with coordinates in metres. Area of use: Between 72°E and 78°E, northern hemisphere between equator and 84°N, onshore and offshore. The datum is an ensemble with about 2.0 m accuracy, so precise work should name a specific realization.

Where can EPSG:32643 be used?

Its area of use is: Between 72°E and 78°E, northern hemisphere between equator and 84°N, onshore and offshore. China. India. Kazakhstan. Kyrgyzstan. Maldives. Pakistan. Russian Federation. Tajikistan.

Is EPSG:32643 in metres or degrees?

EPSG:32643 is projected, so coordinates are easting and northing in metres, not degrees.

How do I convert EPSG:32643 to latitude and longitude?

Transform from EPSG:32643 to EPSG:4326 (WGS 84). In GeoCAD Bridge open the coordinate converter with EPSG:32643 preselected, enter easting and northing, and choose WGS 84 as the target.

What is the central meridian of EPSG:32643?

75° (UTM zone 43), with a scale factor of 0.9996, false easting 500 000 m and false northing 0 m.

Coordinate systems

Articles

Tools

References

  1. IOGP. EPSG Geodetic Parameter Dataset, epsg.org/crs_32643.
  2. PROJ 9.5.1 / pyproj 3.7.2, used to compute every value on this page.

Cite this page

GeoCAD Bridge. “EPSG:32643 — WGS 84 / UTM zone 43N.” GeoCAD Bridge EPSG Library, updated 2026-10-05. https://www.geocadbridge.com/epsg/32643/