WGS 84 ECEF and Local ENU Workbench

How to use WGS 84 ECEF and Local ENU Workbench

WGS 84 semi-major axis and flattening define the prime-vertical radius. Forward ellipsoidal equations produce ECEF x/y/z. Subtracting the entered origin and applying its orthonormal ENU rotation gives local components; a norm certificate checks the rotation.

1. Enter origin json [latitude, longitude, ellipsoidal height m], point json [[latitude, longitude, ellipsoidal height m],…].
2. Choose the stated convention and check the units and supported model.
3. Calculate, inspect the result, then copy or download it.

Good to know

• Up to 100 [latitude degrees, longitude degrees, ellipsoidal height meters] rows. Latitude −90–90, longitude −180–180, height −10000–10000000 m. Approximate floating-point arithmetic; very small offsets can lose precision after Earth-scale coordinate subtraction. This is coordinate conversion on a fixed reference ellipsoid, not a datum/epoch transformation, geoid/mean-sea-level height conversion, surface distance, navigation solution or survey certification. At poles, longitude selects the local frame orientation.
• Local calculation only; no input persistence or external lookup. Text/JSON is limited to 30000 characters and output to 1000000 characters. Numeric model inputs and precision/work limits are stated on this page. Approximate JSON numbers retain full stored values; exact arithmetic outputs retain decimal or fraction strings. Unsupported states fail explicitly.