Land Boundary Information System
Survey Data     H&V Control      Transformation Programs










C O R P S C O N  
Allows users to transform coordinate values between the NAD 27 datums and NAD 83 values when those values are expressed in either State plane coordinates, UTM coordinates, or latitude and longitude. The user may specify NAD 83 State plane coordinate values in meters, the U. S. Survey Foot, or International Foot. A math coprocessor is required, and at least 1.5 Mbytes of hard drive storage is recommended.

NOTE:  Vertcon and Nadcon have been incorporated into Corpscon.

Download


N A D C O N    
Transforms geographic coordinates between the NAD 27 datums and NAD 83 values. Recommended for converting coordinate data for mapping, low-accuracy surveying, or navigation.
Right click on the following links to download:
Conus.las
Conus.los
Nadcom.out
Ndcon210.exe



 N A D C O N 
O N L I N E
Use NADCON over the internet! This means no downloading programs to your computer, no messy installations.

NADCON Online
 
V E R T C O N    
Computes the modeled difference in orthometric height between the North American Vertical Datum of 1988 (NAVD 88) and the National Geodetic Vertical Datum of 1929 (NGVD 29) for a given location specified by latitude and longitude. This conversion is sufficient for many mapping purposes.
Right click on following links to download:
Convasci.exe
Convasci.for
Convbin.for
README.TXT
Vertcon.exe
Vertcon.for
Vertconc.94
Vertcone.94
Vertconw.94

N G S  Geodetic Tool Kit
on-line interactive computation of geodetic values

NGS Toolkit



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