World Coord Sys Tool

World Coord Sys Tool

100 - 500 downloads

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View bigger - World Coord Sys Tool for Android screenshot
View bigger - World Coord Sys Tool for Android screenshot
View bigger - World Coord Sys Tool for Android screenshot
View bigger - World Coord Sys Tool for Android screenshot
This powerful app allows you to convert coordinates between many of the world's coordinate systems. It uses the PROJ4 library and a lookup file containing projection and datum parameters to support over 1700 coordinate systems. Lat/lon, UTM, US State Plane, and many, many others are supported. You can also create your own coordinate systems if you know the parameters, including local grid systems.

The app either takes manual coordinate input or uses your current GPS location. The computed location can be displayed in Google Maps via your web browser with a single button press.

Supported projections:
* Albers Equal Area
* Azimuthal Equidistant
* Cassini
* Equal Area Cylindrical
* Eckert IV
* Eckert VI
* Equidistant Cylindrical
* Equidistant Conic
* Gall
* Lambert Conformal Conic
* Mercator
* Miller Cylindrical
* Mollweide
* Oblique Mercator
* Oblique Stereographic
* Polyconic
* Robinson
* Transverse Mercator

In addition to these projections, the app also supports affine transformations to allow you to set up local grid systems. See for details.

Online help for the app is available at

Permissions required: (1) GPS - to determine your location, (2) SD card access - to read and write user projections file.

Note 1: If editing the user projections file from within the app, make sure to close the app and re-select the coordinate system you've changed otherwise your changes will not be refreshed in the app.

Note 2: The convention used for the rx,ry, and rz values in the 7 parameter toWGS84 values may be different to some other software. If you experience a subtle difference in the results for a user projection which you create, try reversing the signs of these values.

Tags: mollweide proj4, equidistant conic projection agd84, world coordinate system tool proj4, latitude longitude to easting northing, world coord sys tools.

Recently changed in this version

1.23 Added a link to the online help from the help dialog within the app.
1.22 Removed extra zeros from Ellipsoid and ToWGS84 parameters, Added more info about meaning of affine parameters to coord sys details page.
1.21 Added an affine parameters option to allow user creation of local grid systems.
1.20 Added support for oblique stereographic projection used in Lebanon (+proj=sterea)

Comments and ratings for World Coord Sys Tool
  • (80 stars)

    by Boris Bilc on 25/10/2013

    Speachless... a must have app for anyone who is working with coordinate conversions on the field. Beeing able to use custom 7-parametric transformations is just wonderful. Thanks for developing this app, keep up the good work!

  • (80 stars)

    by John Ryan on 03/06/2013

    Amazingly comprehensive projections support