Coordinate Converter
Free online conversion between WGS84 Lat/Lon, UTM zones, and ECEF coordinates. Used by surveyors worldwide.
Input
Result
About this coordinate converter
This tool converts geographic coordinates between the three most common reference systems used in professional surveying and geodesy: geographic coordinates (latitude/longitude), Universal Transverse Mercator (UTM), and Earth-Centered Earth-Fixed (ECEF).
All calculations use the WGS84 ellipsoid (used by GPS and modern GNSS receivers). Results are accurate to sub-meter level — suitable for surveying, mapping, and engineering applications.
Supported coordinate systems
- WGS84 Lat/Lon — geodetic latitude and longitude in decimal degrees or DMS format
- UTM (Universal Transverse Mercator) — projected coordinates in meters, divided into 60 zones
- ECEF (Earth-Centered, Earth-Fixed) — 3D Cartesian coordinates in meters
Common use cases
- Convert GPS field measurements to UTM for CAD and GIS software
- Transform ECEF output from scientific GNSS boards to standard Lat/Lon
- Cross-check coordinates from different total station surveys
- Support for construction layout and boundary work
Accuracy notes
Conversions use standard geodetic formulas with the WGS84 ellipsoid parameters. Expected accuracy is within ±0.5 meters for UTM conversions within each zone's valid range. For higher accuracy (sub-centimeter), professional surveying software with local datum transformations is recommended.