1. Navigate to the desired Web Map Item Details

2. Click Open in Map Viewer

3. See the Web Map

4. Click Content

5. Click the Show Table icon under the desired layer

Note: This example uses the Pradan geometry – Polygon layer

6. See the Table View

7. Click Options

8. Click Add Field

9. Fill out all content

Note: This example uses double type for its numerical field for area in hectares

10. Click Add New Field

11. See the new Field in the Table

Note: This example uses the Hectares field

12. Click on the field name, Hectares

13. Click on Calculate

14. The Calculate Field window appears

15. Fill out the SQL Expression

Expression: POWER(Shape__Area,2)/10000

Explanation: The Shape_Area field is in meters. In order to convert meters to hectares, you must base the expression on the following equation: Ha = m2/1,000

16. Click Calculate

17. See that the Hectares field has been calculated