This web application converts Litchi "Above Gound" heights to Google elevation heights.
When the "Above Ground" option is used in Litchi's Mission Hub an elevation API (Application Programming Interface) is used to obtain elevation data at that waypoint. The height of that waypoint is then adjusted so that the specified height becomes the "Above Ground" height at that waypoint.
Google also provides an elevation API which provides similar, but different, elevation values from what are used in Litchi. Sometimes Litchi's elevation data is more correct. Sometimes Google's elevation data is more correct.
This web application can be used to convert a Litchi mission that uses the "Above Ground" option to another Litchi mission that uses Google's elevation data instead.