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Calculation Issues

Fix Excel for the Web Showing Incorrect SUM in Status Bar

Natalie TaylorNatalie Taylor Sep 25, 2026 868 views

Question details

The user needs to resolve an issue where Excel for the Web displays an incorrect intermediate SUM in the bottom status bar when selecting and reordering decimal values.

Fix Excel for the Web Showing Incorrect SUM in Status Bar
Product
Excel for the Web
Device & OS
not provided
Scenario
Checking the total of selected decimal values quickly using the status bar interface in the web browser.
Observed behavior
The status bar displays an inaccurate sum due to a browser-specific web calculation or rendering defect, even though the worksheet formula calculates the correct result.
Before you start

Ensure you have saved your current workbook and take note of the specific web browser and version you are currently using.

Solution 1Recommended

Update or Switch Your Web Browser

Resolve browser-specific rendering defects by updating your current browser or switching to a supported alternative.

Because Excel for the Web relies on your browser's JavaScript engine, calculation anomalies in the status bar are often tied to specific browser versions.

1
Check your browser version

Open your browser settings (e.g., in Firefox, click the menu button, click Help, and select About Firefox) to see your current version.

2
Install available updates

Allow the browser to automatically check for updates and install the newest version (e.g., updating to Firefox 130.1 or later).

3
Test an alternative browser

If the status bar still shows the incorrect sum, open Excel for the Web using an alternative Chromium-based browser like Chrome, Edge, or Brave.

Update or Switch Your Web Browser
Browser Compatibility: This specific decimal calculation issue has been reproduced in versions like Firefox 130.0.1 but remains absent in Chrome 129, Brave 1.70, and updated Firefox versions.
Free Microsoft Office alternative

Try WPS Office for Reliable Desktop Spreadsheets

Avoid browser-dependent calculation bugs and rendering anomalies by switching to WPS Office. It provides a robust, free desktop spreadsheet experience that perfectly supports your existing Microsoft Excel files without web browser glitches.

  1. 1. Download WPS Office: Visit the official WPS website and download the free installation package for your operating system.
  2. 2. Install the software: Run the downloaded installer and open WPS Spreadsheets.
  3. 3. Open your files directly: Open your existing .xlsx workbooks natively on your desktop to enjoy perfectly accurate status bar calculations.
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Frequently Asked Questions

Why does the Excel for the Web status bar show a different sum than the formula?

This discrepancy is typically caused by a browser-specific JavaScript calculation or rendering defect. When selecting and reordering decimal values, the web browser may temporarily miscalculate the intermediate value shown in the status bar, while the actual =SUM() formula computes correctly on the backend server.

Is this incorrect sum issue present in all web browsers?

No, this behavior is usually isolated to specific browser versions. For instance, it has been reproduced in older builds like Firefox 130.0.1, but users report that the status bar calculates correctly in Brave, Chrome 129, and newer versions of Firefox.

Does this issue affect the desktop version of Excel?

No, this is strictly a web-based anomaly. If you download the workbook and open it in a desktop version of Excel, the status bar will accurately reflect the sum of your selected decimal values without issue.