To the right of Minor Unit, specify a multiple at which you want the minor tick marks to appear.To the right of Major Unit, specify a multiple at which you want the major tick marks to appear.The Axis Options tab of the Format Axis task pane. Make sure the Axis Options tab is selected.(If there is no Format Axis choice, then you did not right-click on an axis in step 1.) Excel displays the Format Axis task pane. Choose Format Axis from the Context menu.Excel displays a Context menu for the axis. Right-click on the axis whose tick marks you want to change.For instance, if you have an axis that ranges from 0 to 1000, there may be major tick marks at every 100 in the range, and minor tick marks at every 50.Įxcel normally sets up the tick marks for you, but you can change the way they appear by following these steps if you are using Excel 2013 or a later version: Tick marks are used to indicate a major or minor demarcation along an axis. If you use an Excel chart type that uses axes, you may have noticed the presence of 'tick marks' on one or all of the axes.