# Calculating latitude and longitude of points using QGIS

How do I easily calculate the lat/long of points using the QGIS Field Calculator?

I saw a previous related question (Using QGIS API and Python, to return latitude and longitude of point?), but it deals with a more advanced approach.

In ArcGIS Desktop this is similar to the `Calculate Geometry` function; I just can't find where do this in QGIS.

First, save the layer as WGS84 and import it again. Then in the field calculator you can use \$x or \$y as a variable to get the x and y. You have to reproject the point layer to EPSG:4326 first. Right-click on the layer name in layer list and select "Save as ...". There, you can specify the target CRS to be EPSG:4326.

Load the new reprojected point layer and then run "Export/Add Geometry Columns".

• Note that with newer version of QGIS (accessible via OSGeo4W installer) you don't even need to Export a layer to a new CRS. You only need to change CRS of the map canvas to whatever is you choice for output units and CRS and check "Calculate using Project CRS" when doing "Export/Add Geometry Columns" and output to the same shapefile. Mar 31, 2012 at 14:40
• FYI "Export/Add Geometry Columns" can be found in `menu > Vector > Geometry Tools > Export / Add Geometry Columns` Feb 25, 2016 at 18:18

With QGIS 3 you can use two simple expressions doing all the reprojection in one go without having to care about settings or projections of the layer. To get decimal degrees as float values use:

For `x` to `lon`:

``````x(transform(\$geometry, layer_property(@layer, 'crs'),'EPSG:4326'))
``````

and for `y` to `lat`:

``````y(transform(\$geometry, layer_property(@layer, 'crs'),'EPSG:4326'))
``````

You can use it for example in QGIS field calculator or anywhere else, where expressions are accepted. You can replace `EPSG:4326` by the EPSG-Code of the CRS you wish to display coordinates in. `EPSG:4326` is the code for WGS 84, so it will return latitude and longitude.

If you prefer the result to be a string value in degree, minutes and seconds instead of decimal degrees, you can add the `to_dms()` function as follows:

``````to_dms(x(transform(\$geometry, layer_property(@layer, 'crs'),'EPSG:4326')),'x',4,'aligned')
``````

and

``````to_dms(y(transform(\$geometry, layer_property(@layer, 'crs'),'EPSG:4326')),'y',4,'aligned')
``````

Explanation: `transform()` function transforms every known CRS to the specified destination CRS (here `EPSG:4326 WGS 84`). You can also type in every other known EPSG Code here instead. `layer_property()` function automatically detects the source layers (`@layer`) CRS using `'crs'`. (Since QGIS 3.18 you can also use `@layer_crs` instead). `x()` and `y()` return the coordinates of the current `\$geometry`.

If the layer already is in the CRS you wish to display coordinates in, the accepted answer still is the shortest expression, by using `\$x` and `\$y`.

In QGIS 3.8 (June 2019), there is now an algorithm to add the X and Y values. It can reproject coordinates on the fly. If you still need a Degree Minute or Degree Minute Second format, you need to use first the `to_dm` or `to_dms` expression to add these fields into the attribute table.

• I'm sorry, etrimaille, I'm so lame I can't find how to find that screen ("Add X/Y Fields to Layer"). Can you please give me some guidance?
– TVZ
Jan 25, 2020 at 16:50
• In 3.10.3, I found it at: Processing > Toolbox > Vector table > Add X/Y fields to layer Mar 25, 2020 at 21:20

One option could be specifying the layer CRS as WGS 84(no projection). May be you will have to change the project CRS too. Now use "Vector > Geometry Tools > Export/Add Geometry Columns". This should give you Lat/long coordinates.

Extract nodes. This makes it into a point layer. Then open attribute table, field calculate, Geometry-\$y/\$x

find polygon corner coordinates

The previous best answer can be considered obsolete.

Using the field calculator, you can get x, y coordinates from points layer in any projection and make the conversion to longitude latitude.

You can find the recipe, documented with formulas and an illustrated GIF.

• formulas from above links: longitude= x(transform(\$geometry, 'EPSG:FROM', 'EPSG:4326')) and latitude = y(transform(\$geometry, 'EPSG:FROM', 'EPSG:4326')) for WGS84 lat/long. Nov 15, 2019 at 22:27
• Can you provide a link to “The previous best answer”, please? If it’s obsolete it should probably be receiving downvotes so as to inform the community that it should no longer be seen as the best.
– PolyGeo
Oct 7, 2020 at 1:05

In the most recent version of QGIS, they added a feature called "Add X/Y Field to Layer" which (In this case you're wanting the lats/longs of a point layer) will add the latitude & longitude to your specified projection as x (longitude) & y (latitude) columns

For user like me, after 7+ years, there is a better and simple answer.