Avadi: coordinates, UTM zone and magnetic declination
Survey data sheet for Avadi (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 Avadi in?
Avadi is in UTM zone 44N, with central meridian 81° E. In WGS 84, the city center is at E 403,508 m and N 1,449,990 m.
What is the magnetic declination in Avadi?
Today the magnetic declination in Avadi is 1.07° W, changing by +1.8′ 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 Avadi?
The geoid undulation (EGM2008) in Avadi is N = −92.07 m. To convert a GNSS height (ellipsoidal, h) to an approximate orthometric height: H = h − N.
Cities near Avadi
- Ambattur 6 km
- Chennai 19 km
- Tirupati 94 km
- Vellore 108 km
- Gundupālaiyam 135 km
- Puducherry 135 km
- Nellore 149 km
- Kallakurichi 198 km
- All cities in India
© GeoNames (CC BY 4.0) · Unicode CLDR · WMM2025 (NOAA/BGS) · EGM2008 (NGA) · IGS