Chart & Visualization Issues

How to Fix Excel Line Chart Tooltip Not Showing X-Axis Values

Kushani NimanthikaKushani Nimanthika Oct 29, 2026 869 views

Question details

The user needs to resolve an issue where line chart tooltips display placeholder text instead of the actual X-axis categories.

How to Fix Excel Line Chart Tooltip Not Showing X-Axis Values
Product
Microsoft Excel 2013
Device & OS
not provided
Scenario
Hovering over data points on an existing line chart to view the category or year labels.
Observed behavior
The tooltip displays an incorrect value such as "Point: S" rather than the correct X-axis data label, and the issue persists across multiple charts despite temporary fixes.
Before you start

Save a backup copy of your Excel workbook to prevent accidental data loss, and verify you have your Office 2013 installation media handy in case an application repair is needed.

Solution 1Recommended

Remove Blank Categories and Recreate the Chart

Refreshing the chart's source data by removing blank entries and recreating it can clear localized data corruption causing the tooltip glitch.

Sometimes invisible characters or blank categories in your source data range can confuse the Excel 2013 chart rendering engine, resulting in broken tooltips.

1
Inspect the source data

Select the source data range used for your line chart and look for any empty cells or invalid entries in the category (X-axis) column.

2
Clean the data range

Delete or filter out the blank rows to ensure you have a continuous, unbroken data range for your chart.

3
Delete the problematic chart

Click on the existing line chart that has the broken tooltips and press the 'Delete' key to remove it from your worksheet.

4
Insert a new line chart

Highlight the newly cleaned data range, navigate to the 'Insert' tab on the top ribbon, and select 'Line Chart' to generate a fresh graph.

5
Verify the tooltips

Hover your cursor over the data points in the new chart to verify that the tooltip now accurately displays the correct X-axis category values.

Remove Blank Categories and Recreate the Chart
Chart Refreshed: Recreating the chart often resets the underlying XML properties, allowing tooltips to read the axis labels properly.
Free Microsoft Office alternative

View and Edit Your Excel Charts Flawlessly in WPS Office

Since this tooltip bug is a known glitch specific to Excel 2013, upgrading your software can be costly. WPS Office provides a free, lightweight alternative with an intuitive interface, ensuring your charts and tooltips display correctly without expensive upgrades.

  1. 1. Install WPS Office: Download and install the free WPS Office suite from the official website.
  2. 2. Open your Excel workbook: Launch WPS Spreadsheet, click 'Open', and select your existing .xlsx file containing the line charts.
  3. 3. Interact with your charts: Hover over the chart data points to instantly view the correct X-axis and Y-axis tooltips without errors.
Fully compatible with Microsoft Excel (.xlsx) chart formats and data rangesEasily view and interact with line charts without tooltip glitchesLightweight alternative with a familiar spreadsheet interfaceFree to use for everyday spreadsheet and data visualization tasks
microsoft office alternative - wps office

Frequently Asked Questions

Why does my Excel chart tooltip show 'Point: S'?

In Excel 2013, this is often caused by an application-specific bug or corrupted chart data ranges where the software fails to read the category axis properly, defaulting to a placeholder value.

How do I change what the tooltip displays in Excel charts?

Tooltips automatically display the Series Name, X-axis value, and Y-axis value based on your chart's source data. You can ensure they display correctly by right-clicking the chart, choosing 'Select Data', and accurately defining your axis labels.

Does this tooltip issue affect newer versions of Excel?

Testing indicates that workbooks experiencing this specific tooltip bug in Excel 2013 typically function correctly and display accurate tooltips when opened in newer versions like Office 2019 or highly compatible alternatives like WPS Spreadsheet.

How can I fix chart data range errors?

Right-click your chart and choose 'Select Data'. Review the Horizontal (Category) Axis Labels section and click 'Edit' to re-select the exact, continuous range of cells containing your desired X-axis values.