[Qgis-user] Calculate acres

[Marc Bordelon]

I've created a shape file, geometry is polygon, I have the CRS set as what the project is set at.I open the field calculator-Create a new field "Acres" - set the Output field type to "Decimal number (real) - output field length to 5 and precision to 2 - using the Geometry- expression: $area to calculate the acres it gives me "nan" for the preview. No acres.I've been able to create a new field and calculate acres and length (ft) with no problem. 
I'm running qgis 3.34.7
Marc Bordelonmarcbordelon at yahoo.com
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