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Cape Town: coordinates, UTM zone and magnetic declination

Survey data sheet for Cape Town (South Africa) for field work: coordinates, UTM zone, scale factor, grid convergence, today's magnetic declination and geoid undulation, computed for the city center.

Latitude33°55′33.0″ S
Longitude18°25′23.6″ E
Decimal degrees-33.92584, 18.42322
UTM zone34S · MC 21° E
UTM (WGS 84)E 261,803 · N 6,243,076
Scale factor (k)1.000299
Grid convergence+1.4388°
Magnetic declination (today)26.81° W · −13.9′/year
Geoid undulation (EGM2008)N = 31.13 m
Approximate elevation25 m
Time zoneAfrica/Johannesburg (UTC+2)
Population4,772,846

Values for the city center (GeoNames coordinate). Declination from the World Magnetic Model 2025 for today's date; geoid from EGM2008. For an exact point, use the tools below.

Nearest GNSS reference stations (IGS)

StationLocationDistance
JCTW JCTW00ZAFCape Town, South Africa5 km
HNUS HNUS00ZAFHERMANUS, South Africa92 km
SUTM SUTM00ZAFSutherland, South Africa281 km

Tools to use here

FAQ

What UTM zone is Cape Town in?

Cape Town is in UTM zone 34S, with central meridian 21° E. In WGS 84, the city center is at E 261,803 m and N 6,243,076 m.

What is the magnetic declination in Cape Town?

Today the magnetic declination in Cape Town is 26.81° W, changing by −13.9′ per year (WMM2025 model). To get the true azimuth, add the declination to the magnetic azimuth (East positive, West negative).

What is the geoid undulation in Cape Town?

The geoid undulation (EGM2008) in Cape Town is N = 31.13 m. To convert a GNSS height (ellipsoidal, h) to an approximate orthometric height: H = h − N.

Cities near Cape Town

© GeoNames (CC BY 4.0) · Unicode CLDR · WMM2025 (NOAA/BGS) · EGM2008 (NGA) · IGS

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