Swansea: coordinates, UTM zone and magnetic declination
Survey data sheet for Swansea (United Kingdom) for field work: coordinates, UTM zone, scale factor, grid convergence, today's magnetic declination and geoid undulation, computed for the city center.
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)
Tools to use here
FAQ
What UTM zone is Swansea in?
Swansea is in UTM zone 30N, with central meridian 3° W. In WGS 84, the city center is at E 434,702 m and N 5,719,284 m.
What is the magnetic declination in Swansea?
Today the magnetic declination in Swansea is 0.08° W, changing by +11.0′ 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 Swansea?
The geoid undulation (EGM2008) in Swansea is N = 53.23 m. To convert a GNSS height (ellipsoidal, h) to an approximate orthometric height: H = h − N.
Cities near Swansea
- Cardiff 55 km
- Bristol 95 km
- Birmingham 169 km
- Coventry 188 km
- Reading 206 km
- Birkenhead 207 km
- Liverpool 209 km
- Leicester 223 km
- All cities in United Kingdom
© GeoNames (CC BY 4.0) · Unicode CLDR · WMM2025 (NOAA/BGS) · EGM2008 (NGA) · IGS