Is there a simple way (without writing script or Python skills) to auto-calculate and auto-populate "lat" and "lon" attributes in QGIS?

When I manually add new points or move existing points in my layer, I'd like the "lat" and "lon" attributes to be captured and the attribute table populated/updated as I complete the task.

Right now, I create or modify the points and then update the attribute table with $y and $x in the Field Calculator.

  • 3
    use a virtual field or an auto-updating default field value
    – csk
    Sep 11, 2019 at 2:37

2 Answers 2


You have a couple of options.

Option 1 - Virtual Field

The easiest method - which based on your question, seems likely to satisfy - is to simply add virtual fields "lat" and "lon" via the Field Calculator, with the following expressions:

  • x(@geometry) (you can use $x, but this is deprecated)
  • y(@geometry)

enter image description here

Option 2 - Default Values

The other option is to set default values, and have them auto-update. If this is the layer creation dialog:

enter image description here

Then under Layer Properties -> Attributes Form, click on "lat" and set the defaults to x(@geometry). Similar for "lon" - y(@geometry). Also set the Apply default value on update checkbox

enter image description here

Then when you create a point, the attributes will populate automatically:

enter image description here

And if you move the point, they will update:

enter image description here


Layer properties, Custom forms, select the field of the coordinate(s), Default value, $x, $y (or the way you intend them to be presented)

  • 1
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