The XYZ to LLA calculator computes the latitude, longitude and altitude associated with the XYZ coordinate in an Earth Centered Fixed coordinate frame.
INSTRUCTIONS: Choose units and enter the following:
- (X) X coordinate
- (Y) Y coordinate
- (Z) Z coordinate
Latitude, Longitude and Altitude (LLA): The calculator returns latitude and longitude in degrees, and altitude in meters. However, these can be automatically converted to compatible units via the pull-down menu. Note: the latitude is provided in Geocentric Latitude and Geodetic Latitude (local horizon) values.
The Math / Science
This formula lets the user enter a three dimensional vector with X, Y and Z components of any length in any of vCalc's standard units. 
Vector in three dimensions This algorithm converts all of the components to a standard unit (meters) and calculates the latitude, longitude and altitude based on the WGS-84 model of the earth as an oblate spheroid. The primary consideration in that model is the bulge of the Earth along the equator.
Earth Model Calculators
- Slant Range using Position Vectors
- Slant Range from Elevation Angle (α)
- Slant Range using Subtended Angle (β)
- Distance to Horizon
- Angle of Satellite Visibility
- Grazing Angle
- XYZ to Latitude, Longitude, Altitude
- Earth WGS-84 Equatorial radius in meters: 6378137.0 m
- Earth WGS-84 Polar radius in meters: 6356752.31424518 m
- Earth Flattening Factor (WGS-84): 0.00335281066474748071984552861852
- Ellipse flattening factor: F = (Er - Pr)/Er
- Geocentric to Geodetic Latitude
- Geodetic to Geocentric Latitude