# Create a calculated field
Perform the following steps to create a calculated field:
1. Select the **Data** tab in the Interactive Report in which you want to add a calculated field.
2. Navigate to the bottom of the **Data** tab, locate the **Calculated Fields** entry.
3. Click the plus sign on the **Calculated Fields**.
The **Create Calculated Field** dialog box appears.
4. Enter the values as for your calculated field as described in the following table:
| Field | Description |
| ----------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Display Name** | Enter the name of the calculated field you want displayed. |
| **Category** | Select the category of the function. |
| **Select Fields** | Select the fields to use in the formula. |
| **Functions** | Select the formula function to apply in the calculated field by double-clicking the function name. The function will appear in the **Formula** field. See the **Pentaho Report Designer** document for common formula functions. |
| **Formula** | Edit your formula field to your specifications. |
| **Data Format** | Select the data type for the calculated field you have created. The values are:
|
| **Description** | Displays the description of the selected function |
| **Return Type** | Displays the return type of the selected function. For example, `SUM(2, 3)` will return an integer type, while `CONCATENATE("A", "B")` will return a string type. |
5\. Click \*\*OK\*\*
```
The calculated field is added to the list in the **Data** tab.
```
6\. (Optional) Right-click the calculated field to open a menu with the following options:
```
- **Edit**: Select to edit the calculated field formula.
- **Delete**: Select to delete the calculated field.
- **Add To Report**: Select to add the calculated field to the columns in the report layout.
- **Add To Groups**: Select to add the calculated field to the groups in the report layout.
```
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