Kollam: coordinates, UTM zone and magnetic declination
Survey data sheet for Kollam (India) 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 Kollam in?
Kollam is in UTM zone 43N, with central meridian 75° E. In WGS 84, the city center is at E 674,257 m and N 982,082 m.
What is the magnetic declination in Kollam?
Today the magnetic declination in Kollam is 1.68° W, changing by +1.9′ 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 Kollam?
The geoid undulation (EGM2008) in Kollam is N = −96.14 m. To convert a GNSS height (ellipsoidal, h) to an approximate orthometric height: H = h − N.
Cities near Kollam
- Thiruvananthapuram 60 km
- Tirunelveli 122 km
- Kochi 123 km
- Kanayannur 126 km
- Theni 159 km
- Thoothukudi 171 km
- Thrissur 186 km
- Madurai 204 km
- All cities in India
© GeoNames (CC BY 4.0) · Unicode CLDR · WMM2025 (NOAA/BGS) · EGM2008 (NGA) · IGS