ENU (East/North/Up) to ECEF Converter
A free, browser-based converter. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserhard
Enter Values
Enter your values and press Calculate to see results.
How to use this calculator
- Enter a reference latitude/longitude/height.
- Enter the local East, North and Up offsets (metres).
- Press Convert to get absolute ECEF X/Y/Z.
How it works
Converts a local East-North-Up (ENU) offset measured about a reference point into absolute ECEF coordinates by rotating into the global frame and adding the reference position.
Worked example
100 m E, 200 m N, 5 m up. From a reference point, returns the absolute ECEF position.
Frequently asked questions
What is ENU used for?
Local site grids, robotics, drones and target tracking use East-North-Up coordinates around a known origin.
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.