UTM to WGS84 Converter
About UTM Coordinate System
UTM (Universal Transverse Mercator) is a map projection system that divides the Earth into 60 zones, each 6 degrees of longitude wide.
The UTM system was developed by the U.S. Army Corps of Engineers in the 1940s and later adopted by NATO.
UTM is widely used in topographic mapping, military operations, emergency services, land management, forestry, and environmental monitoring.
The Earth is divided into 60 north-south zones, each spanning 6 degrees of longitude.
UTM uses meters as its unit of measurement, with easting and northing coordinates.
Each zone limits distortion to less than 0.1% within the zone boundaries.
About WGS84 Coordinate System
WGS84 (World Geodetic System 1984) is the global standard geodetic reference system used by GPS. It defines an Earth-centered, Earth-fixed coordinate system and geodetic datum.
Developed by the U.S. Department of Defense in 1984, WGS84 has undergone several refinements (WGS84(G730), WGS84(G873), WGS84(G1150), WGS84(G1762)) to improve accuracy through GPS satellite observations.
WGS84 is the default coordinate system for GPS receivers worldwide. It is used in aviation, maritime navigation, Google Maps, OpenStreetMap, GIS applications, and scientific research.
WGS84 is the native coordinate system of the Global Positioning System (GPS), ensuring direct compatibility with all GPS receivers and satellite navigation systems worldwide.
As the most widely adopted geodetic datum, WGS84 provides a consistent global reference frame for mapping, surveying, and geospatial data exchange across international boundaries.
With continuous refinements, WGS84 achieves centimeter-level accuracy globally, making it suitable for high-precision applications like surveying, drone navigation, and scientific research.
UTM to WGS84 Conversion Guide
// UTM → WGS84 (UTM conversion)
// UTM uses Transverse Mercator projection with 6° zones
// Zone determination:
// zoneNum = floor((longitude + 180) / 6) + 1
// Transverse Mercator projection (forward):
// Uses WGS84 ellipsoid (a=6378137m, 1/f=298.257223563)
// Scale factor k₀ = 0.9996
N = a / √(1 - e² × sin²(φ))
T = tan²(φ)
C = e² × cos²(φ) / (1 - e²)
A = cos(φ) × (λ - λ₀)
// Easting and Northing computed from standard TM series expansions
// False easting = 500,000m, False northing = 0m (N) or 10,000,000m (S)UTM (Universal Transverse Mercator) divides the Earth into 60 zones of 6 degrees longitude each. The Transverse Mercator projection maps ellipsoidal coordinates to a plane coordinate system.
- Enter your UTM coordinates in the input field (latitude, longitude, one pair per line)
- Click the Convert button to transform coordinates from UTM to WGS84
- Review the converted WGS84 coordinates in the output field
- Copy the results or save them as an XLSX file for further use
- Ensure coordinates are within valid ranges before conversion
- For batch conversions, enter one coordinate pair per line
- Verify a sample of converted coordinates on your target platform
- All conversions are performed client-side for complete data privacy