Coordinate Converter
Convert geographic coordinates between WGS84 (World Geodetic System 1984) and SIRGAS-ES2007 (Sistema de Referencia Geocéntrico para las Américas - El Salvador 2007) coordinate systems.
Enter coordinates as decimal degrees (e.g., 13.7942)
About SIRGAS-ES2007
SIRGAS-ES2007 (Sistema de Referencia Geocéntrico para las Américas - El Salvador 2007) is the official geodetic reference system for El Salvador. It is a regional implementation of the SIRGAS system, which was developed to provide a unified geodetic reference frame for the Americas.
The system uses a Lambert Conformal Conic projection with two standard parallels, specifically optimized for El Salvador's geographic location. It provides high accuracy for surveying, mapping, and cadastral work within the country.
SIRGAS-ES2007 coordinates are expressed in meters using an easting (X) and northing (Y) system, with a false easting of 500,000 meters and a false northing of 295,809.184 meters to ensure all coordinates are positive.
SIRGAS-ES2007 uses a projected coordinate system, meaning that geographic coordinates (latitude and longitude) are mathematically transformed into a flat, two-dimensional coordinate system suitable for surveying and mapping.
Easting (X Coordinate)
The easting value represents the horizontal distance in meters from the central meridian (longitude -88.99998297°). Values increase as you move eastward. The false easting of 500,000 meters ensures all values are positive and typically range from approximately 200,000 to 800,000 meters for locations in El Salvador.
Northing (Y Coordinate)
The northing value represents the vertical distance in meters from the origin latitude (13.78429934°). Values increase as you move northward. The false northing of 295,809.184 meters ensures all values are positive and typically range from approximately 100,000 to 500,000 meters for locations in El Salvador.
Example
A point in San Salvador might have coordinates: Easting = 350,000 m, Northing = 400,000 m. This means the point is 150,000 meters west of the false easting line and 104,190.816 meters north of the false northing line.
SIRGAS-ES2007 is the official coordinate system for El Salvador and is required for all official surveying, cadastral, and mapping work. Here are the key reasons for its adoption:
- High accuracy for local surveying and mapping projects within El Salvador
- Standardized system ensures consistency across all government and private surveying work
- Optimized projection minimizes distortion for El Salvador's geographic area
- Compatible with modern GPS and GNSS technology while maintaining local accuracy
- Required for legal property boundaries, cadastral surveys, and official mapping
All official land surveys, property boundaries, and cadastral records in El Salvador must use SIRGAS-ES2007 coordinates to ensure legal validity and consistency across different surveying projects.
1990s - Development of SIRGAS
The SIRGAS (Sistema de Referencia Geocéntrico para las Américas) project was initiated in the 1990s by geodetic organizations across Latin America to create a unified geodetic reference system for the Americas. This was necessary because different countries were using incompatible local coordinate systems, making cross-border mapping and surveying difficult.
2000s - Regional Implementations
Each country in Central and South America developed its own regional implementation of SIRGAS, optimized for their specific geographic location. El Salvador developed SIRGAS-ES2007, which uses a Lambert Conformal Conic projection with parameters specifically chosen to minimize distortion across the country's territory.
2007 - Official Adoption
SIRGAS-ES2007 was officially adopted as the national geodetic reference system for El Salvador in 2007. This standardization replaced various older local coordinate systems and ensured that all new surveying and mapping work would use a consistent, modern system compatible with GPS technology.
Present Day
Today, SIRGAS-ES2007 is the mandatory coordinate system for all official surveying, cadastral work, and mapping in El Salvador. It is used by government agencies, private surveying companies, and is required for property transactions, infrastructure projects, and land development. The system continues to be maintained and updated to ensure compatibility with modern satellite positioning systems like GPS, GLONASS, and Galileo.