Skip to content
Website to guess the projection for a given point.
Branch: master
Clone or download
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Type Name Latest commit message Commit time
Failed to load latest commit information.


What do you do when you have a geospatial file and you don't know which projection it's in? Use What the Proj!

  1. Enter one of the projected coordinates, as X and Y.
  2. Enter the longitude and latitude that you think it might correspond to. (For instance, if you know all the data is related to Canberra, you could pick a long/lat in the middle of Canberra)
  3. Click "Guess!" All known EPSG codes will be tried. The one that gives a result closest to your target will be shown.

Don't have any actual data and just want to see it work? Try test data

Project setup

npm install

Compiles and hot-reloads for development

npm run serve

Compiles and minifies for production

npm run build

Lints and fixes files

npm run lint
You can’t perform that action at this time.