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  1. I have a polygon and I create a new field area_ha using this expression in the field calculator: round( $area /10000,1)

    When I use that field for my labels, everything is fine and works as it should work:

    enter image description here

  2. I create a new field, but this time a virtual field with the name "area_ha_virtual_field". I use the same expression in the field calculator. The resulting value in the attribute table is fine. But when I want to use that new virtual field to label my blue polygon, it shows a totally different number than in my attribute table:

    enter image description here

  3. Also, I get that same weird number as a label, when I use that expression in my labeling properties:

    enter image description here

My CRS is 25832.

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  • What is QGIS version? I use v 3.16 and there is no problem.
    – Kadir Şahbaz
    Commented Apr 13, 2021 at 18:45
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    have you tried area($geometry) instead of $area?
    – Erik
    Commented Apr 13, 2021 at 20:14
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    @Erik: round(area($geometry)/10000,1) did the trick! Thanks!
    – Enzo Baldini
    Commented Apr 14, 2021 at 20:47

1 Answer 1

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As @Erik suggested: When I use round(area($geometry)/10000,1) instead of round( $area /10000,1) the virtual values are displayed correctly as labels.

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