Excel Performance Problems

How to Fix Excel for Mac Extremely Slow on Simple Commands

Aamir Naveed Akram Oct 9, 2026 869 views

Question details

Excel for Mac becomes extremely slow and takes minutes to perform simple commands like inserting or deleting rows.

How to Fix Excel for Mac Being Extremely Slow on Simple Commands

Product: Microsoft Excel for Mac
Device & OS: MacBook Air (macOS)
Scenario: Editing and reloading small to medium-sized workbooks (e.g., a 9 MB file).
Observed behavior: Excel takes over five minutes to execute basic commands or reload files. Standard troubleshooting like Safe Mode and removing add-ins do not resolve the issue.

Before you start

Before troubleshooting, ensure you have saved a backup copy of your problematic workbook to prevent any data loss during the diagnostic steps.

Solution 1Recommended

Diagnose File-Specific Issues and Monitor System Resources

Determine whether the lagging is caused by a single corrupted workbook or overall Mac system resource limitations.

Often, performance issues are isolated to a single file due to excessive formatting or calculation chains, rather than the Excel application itself.

Test a Blank Workbook

Open a completely new, blank workbook in Excel and try inserting or deleting rows. If the performance is fast, your previous 9MB file is likely the root cause.

Open Activity Monitor

Go to your Mac's Applications folder, open 'Utilities', and launch 'Activity Monitor'.

Review CPU and Memory Usage

Click the 'Memory' and 'CPU' tabs to check if Microsoft Excel is monopolizing your Mac's system resources.

Verify Excel Version

Check your exact Excel version by clicking 'Excel' > 'About Microsoft Excel' in the top macOS menu bar to ensure you are on the latest patch.

Diagnose File-Specific Issues and Monitor System Resources

Check Workbook Content: If only one file is slow, check for excessive conditional formatting, hidden objects, or volatile formulas which frequently degrade performance in Excel for Mac.

Solution 2

Test Excel in macOS Safe Mode

Booting your Mac in Safe Mode disables background software and add-ins that might interfere with Excel.

Free Microsoft Office alternative

Experience Fast Spreadsheet Editing with WPS Office for Mac

If Microsoft Excel continues to lag or freeze on your MacBook, consider switching to WPS Office. It is a highly optimized, lightweight alternative that handles complex data smoothly and is fully compatible with Microsoft Office formats.

1. Download WPS Office: Visit the official WPS website and download the macOS version.
2. Install the Application: Open the downloaded package and drag WPS Office to your Applications folder.
3. Open Your Excel File: Launch WPS Spreadsheet and open your existing .xlsx file to enjoy fast, seamless editing.

Optimized performance handles heavy data and complex spreadsheets without lagging.Fully compatible with Microsoft Excel (.xlsx, .xls, .csv) formats.Lightweight installation saves Mac storage and memory resources.Familiar user interface requires no learning curve.

microsoft office alternative - wps office

Frequently Asked Questions

Why is a specific Excel file so slow on my Mac?

Heavy conditional formatting, hidden objects, massive calculation chains, or volatile formulas can cause a single file to lag significantly, even if the Excel application functions perfectly with other blank workbooks.

Does reinstalling Excel for Mac fix performance issues?

Not always. If the issue is caused by a specific file's corruption, background interference, or macOS resource limits, reinstalling will not help. It is highly recommended to test with Activity Monitor and Safe Mode first.

How do I clear the Excel cache on a Mac to speed it up?

You can clear the cache by opening Finder, pressing Command+Shift+G, navigating to '~/Library/Containers/', and moving the 'com.microsoft.Excel' folder to the trash. This forces Excel to rebuild its preferences upon the next launch.

Excel & Data Problems