How can I convert elevations from NGVD to NAVD and vice-versa?
The National Oceanic and Atmospheric Administration (NOAA) National Geodetic Survey (NGS) provides a simple online conversion site called VERTCON. Simply input the latitude, longitude, and elevation (in meters) in one datum to get the elevation in the other. U.S. Army Corps of Engineers software CORPSCON can be downloaded and run on a personal computer and also make the conversions.
