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GreatCirc 2.1

A tool for calculating Great Circle distances on the earth's surface.


Last Week downloads: 0
Total downloads: 169
  • Last Updated: Jun 11, 2012
  • License: Shareware $9.95
  • OS: Windows XP
  • Requirements: No special requirements

User reviews

4 out of 5 based on 1 ratings for GreatCirc 2.1

For GreatCirc 2.1Publisher's description


GreatCirc is a Home & Education software developed by Gunamoi Software. After our trial and test, the software is proved to be official, secure and free. Here is the official description for GreatCirc:

Edit by Brothersoft: GreatCirc is a tool for calculating Great Circle distances on the earth's surface, and plotting points and great circle paths on a world map.

Basic Features (Free)
- Great Circle Distance calculation: find the shortest distance and direction between two points. (example)
- Great Circle End Point calculation: find the end point of a great circle path, given start, distance and direction.
- Rhumb Line Calculation: find the distance between two points along a line of constant bearing.
- Coverage Area calculation: find a circular coverage area, given a central point and the radius. (example)
- View the Great Circle, Rhumb Line, or Coverage Area plotted on a world map, in equirectangular projection.
- Enter map points by typing their latitude & longitude coordinates, in Decimal, or degrees,minutes,seconds format.
- Enter map points by clicking on the world map. Left-click for Point 1, right click for Point 2.
- Choose map points from a built-in list of Major Cities.
- Perform calculations using a simple spherical earth model, or the WGS84 standard ellipsoid.

Advanced Features (requires Registration)
- View the world map in Mercator projection or Globe View. (requires DirectX). (example)
- Zoom the world map to get a closer look, or to more accurately click a location.
- Move around the zoomed world map, or rotate the Globe view.
- Save the map image, complete with lines or coverage area, to a bitmap file.
- Save the calculation results to a HTML Report file, or to a comma separated text file for loading into a spreadsheet.
- Calculate and display the magnetic azimuths (Compass directions), in addition to the True azimuths.
- Choose map points from a user supplied text file.
- Switch to Batch Mode.
- more

New, in version 2.0, GreatCirc can also calculate and plot the Rhumb Line distance between two locations. In navigation, a rhumb line (or loxodrome) is a line crossing all meridians of longitude at the same angle, i.e. a path derived from a defined initial bearing
you can free download GreatCirc 2.1 now.


Please be aware that Brothersoft do not supply any crack, patches, serial numbers or keygen for GreatCirc,and please consult directly with program authors for any problem with GreatCirc.