[Qgis-user] Assistance with Calculating Polygon Area in Hectares (EPSG:25832)

[Phil Wyatt]

Hi Christoffer,

 

Make sure the field is Decimal with a precision of 3. It may be that the
field is using integer and the area of the polygon is less than 1 hectare in
which case you need the precision of 3 to get square metres.

 

Cheers - Phil 

 

From: QGIS-User <qgis-user-bounces at lists.osgeo.org> On Behalf Of Christoffer
Toft Hviid Jensen via QGIS-User
Sent: Thursday, 18 December 2025 6:23 PM
To: qgis-user at lists.osgeo.org
Subject: Re: [Qgis-user] Assistance with Calculating Polygon Area in
Hectares (EPSG:25832)

 

Hi Andrea

Oh sorry, i thought this was the support email. 

I hope you might be able to answer my question, and if not would be so kind
to point me toward where i find the support email?

I am using the 3.44 version.

the CRS is EPSG:25832 - ETRS89 / UTM zone 32N

I use this expression round( $area / 10000, 2) || ' ha'  in the calculator
box through the attributtable.

When i click enter, i just get a 0 in the ha field. Could it have something
to do with the background i'm using coming from web-quickmapservice- google
satellite?

Best regards

 

Christoffer Hviid

 

  _____  

Fra: Andrea Giudiceandrea <andreaerdna at libero.it
<mailto:andreaerdna at libero.it> >
Sendt: 17. december 2025 20:55
Til: qgis-user at lists.osgeo.org <mailto:qgis-user at lists.osgeo.org>
<qgis-user at lists.osgeo.org <mailto:qgis-user at lists.osgeo.org> >
Cc: Christoffer Toft Hviid Jensen <cth at patriotisk.dk
<mailto:cth at patriotisk.dk> >
Emne: Re: [Qgis-user] Assistance with Calculating Polygon Area in Hectares
(EPSG:25832) 

 

Hi Christoffer,
this is the QGIS users' mailing list, not the "QGIS Support Team".

Not sure I understood correctly your issues and why you correlate the 
downloading issue to the area calculation issue.

Anyway, regarding the area calculation issue, please specify the QGIS 
version that you are using, the CRS of the layer which the features 
geometries are stored in, and what expression you are using (and where 
you are using it exactly) in order to obtain the measure of the area in 
hectares.

Obtaining the value in hectares of the area of a feature's geometry in a 
ESPG:25832 layer is as simple as using the expression: area(@geometry)/10000

See the documentation of the function 'area()' for more info: 
https://docs.qgis.org/latest/en/docs/user_manual/expressions/functions_list.
html#id25

Regards.

Andrea

> Christoffer Toft Hviid Jensen cth at patriotisk.dk
> Wed Dec 17 06:35:44 PST 2025

> I am writing to request assistance with a workflow issue in QGIS.

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