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How to add dotted forecast line in an Excel line chart?

Author Kelly Last modified

Adding a dotted forecast line to an Excel line chart can make it easier to visualize projected data alongside actual values. Whether you're planning future sales or analyzing trends, this guide will walk you through creating a dotted forecast line in your chart. Learn how to do this manually or with the help of a handy Excel tool.


Add dotted forecast line in an Excel line chart

To add a dotted forecast line in an existing line chart in Excel, please do as follows:

1. Beside the source data, add a Forecast column, and list the forecast sales amounts as shown in the screenshot below.
Note: Please remember to include the sales amount for June in the Forecast column as well.
A screenshot of forecast column data added to Excel

2. Right-click the line chart, and click Select Data in the context menu. See screenshot:
A screenshot of the Select Data option in an Excel chart

3. In the Select Data Source dialog box, please click the Add button in the Legend Entries (Series) section. See screenshot:
A screenshot of the Select Data Source dialog box in Excel

4. Now the Edit Series dialog box comes out. Please (1) type Forecast in the Series name box, (2) specify the Forecast column excluding the column header as Series values, and then (3) click the OK buttons successively to close the two dialog boxes. See screenshot:
A screenshot of the Edit Series dialog box

5. Now the forecast line is added to the line chart. Right-click the forecast line, and click Format Data Series from the context menu. See screenshot:
A screenshot of the Format Data Series option in Excel

6. In the Format Data Series pane, please (1) click the Fill & Line icon, (2) expand the Line section; and (3) Select Round Dot from the Dash type drop-down list. See screenshot:
A screenshot of selecting Dash type as Round Dot in Excel
Note: If you are using Excel 2010 or earlier versions, it will open the Format Data Series dialog box. In the dialog box, please click Line Style in the left bar, select Round Dot from the Dash type drop-down list, and then close the dialog box.

At this point, the dotted forecast line has been successfully added to the existing line chart. See screenshot:
A screenshot of the final line chart with dotted forecast line in Excel


Add dotted forecast line in a line chart with an amazing tool

If you have Kutools for Excel installed, you can apply its Forecast Chart feature to quickly create a line chart which shows the actual values with solid line and display the forecast values with dotted line in Excel.

Kutools for Excel offers over 300 advanced features to streamline complex tasks, boosting creativity and efficiency. Itegarate with AI capabilities, Kutools automates tasks with precision, making data management effortless. Detailed information of Kutools for Excel...         Free trial...

1. Prepare the source data containing both actual values and forecast values in two columns, and select the source data.
A screenshot of the Excel source data for forecast chart

2. Click Kutools > Charts > Category Comparison > Forecast Chart to enable this feature.
A screenshot showing the Kutools Chart option in Excel

3. Now the Forecast Chart dialog comes out. By default, the ranges are filled automatically into the Axis label range, Actual value range, and Forecast value range boxes based on the selected source data. If they are incorrect, correct them manually. Then click the Ok button.
A screenshot of the Forecast Chart dialog in Excel

4. A dialog pops out and tells you a hidden sheet is created to store the intermediate data. Click Yes to go ahead.

Now a line chart is created. In the chart, the solid line part presents the actual values, while the dotted line part shows the forecast values.
A screenshot of the completed forecast chart in Excel with dotted line

Notes:
In the Forecast Chart dialog, if you have ticked the Auxiliary guides option, typed in or referred a cell in the below box, it will create a forecast chart with a horizontal line as below screenshot shown.
A screenshot of forecast chart with auxiliary guides in Excel

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