Excel: How to add max or min line to a chart
If there are many data shown in an Excel chart, to add a max or min line in the chart will be nice to quickly find the maximum or minimum value of the chart as below screenshot shown.
Add max and min line to chart by using helper columns
Add max and min line to chart by Kutools for Excel's Chart Tool
To add max and line to a chart, firstly, you need to find the maximum value and the minimum value of the original data.
1. Select a blank cell next to the data, and type the formula =MAX($B$2:$B$21), $B$2:$B$21 is the data range, you can change it to meet your need, press Enter key to get the maximum.
: Since we need to find the maximum value in the same range, absolute reference will keep the range not changing when drag the autofill handle down or right.
2. Then select this formula cell, drag the autofill handle down to the end of the data.
3. Then right-click on the chart to show the context menu, and click Select Data.
4. In the Select Data Source dialog, click Add button.
5. In the Edit Series dialog, select the cell to shown the series name, then select the cells that contain MAX function you have done in step 1 and 2. Click OK > OK.
Now the max values have been added into the chart.
6. Right-click at the added maximum values in the chart, and select Change Series Chart Type from the context menu.
7. In the Change Chart Type window, go to Choose the chart type and axis for your data series section, and click the drop-down list to change the chart type to Line for the Max series. Click OK.
Now the max line has been added to the chart.
Use =MIN($B$2:$B$21) formula and repeat the above steps to add the min line to the chart.
If you have Kutools for Excel installed, there is a feature Add Line to Chart in the Chart Tools, which can quickly add a line to the selected chart.
| Kutools for Excel, with more than 300 handy functions, makes your jobs more easier. | ||
1. Select the chart you want to add max or min line, then click Kutools > Chart > Chart Tools > Add Line to Chart.
2. In the Add line to chart dialog, check Other values option, and type the maximum or minimum value in the textbox. Click Ok.
Now the maximum line or minimum line has been inserted to the chart. 
Repeat the above steps to add another line.
For more details about this feature, please visit here.
For all features about Kutools for Excel, please view here.
For 30-day free trial of Kutools for Excel, please download now.
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