24 May 2016

Geodetic Toolkit Conversion Tools

Smart web-based tools for some coordination conversion routines. The State Plane Coordinate system provides coordinates on a flat grid for easy computation while maintaining a difference between geodetic and grid distance of one part in 10,000 or better. The utilities in this package provide methods for converting between Geodetic Positions and State Plane Coordinates.

The State Plane Coordinate system divides the U.S. into a hundred or more distinct grid surfaces (Zones). Do not mix coordinates from one Zone with that in another. In you need to cross Zone boundaries, use Geodetic Positions. The utilities in this package provide methods for converting between Geodetic Positions and State Plane Coordinates or for finding an SPC Zone.
This utility uses NGS program SPCS83 or program GPPCGP to convert NAD83 or NAD27 Geodetic Positions to State Plane Coordinates (SPC)

Interactive Conversions:

  • Latitude/Longitude -> SPC
  • SPC -> Latitude/Longitude
  • Find Zone
Click here to access the tools

SPCS83 – Free PC Software Download

Converts NAD 83 state plane coordinates to NAD 83 geographic positions and conversely. Includes defining constants for NAD 83 coordinate zones. State plane coordinates are entered or computed to 1 mm accuracy, while the latitudes and longitudes entered or computed correspond to approximately 0.3 mm accuracy.

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