Excel Performance Problems

How to Remove Unused Rows in an Excel Worksheet

Rana Garcia Oct 1, 2026 869 views

Question details

The user wants to remove or delete unused empty rows at the bottom of an Excel worksheet to optimize the used range and potentially improve workbook performance.

How to Remove Unused Rows in an Excel Worksheet

Product: Excel
Device & OS: not provided
Scenario: Optimizing a worksheet's used range or troubleshooting performance issues caused by excess blank rows.
Observed behavior: The worksheet contains thousands of empty rows within the recognized used range, which may unnecessarily inflate file size or slow down processing.

Before you start

Before deleting rows, ensure you have correctly identified the boundary below your actual data so you do not accidentally remove hidden rows containing important information.

Solution 1Recommended

Delete Unused Rows Below Your Data

Use keyboard shortcuts to quickly select and delete all rows beneath your actual data set, resetting the active used range.

Every Excel worksheet has over a million rows. While empty cells generally have little effect on performance, rows that are formatted but contain no data can bloat your file size. Deleting the contents of these rows is not enough; you must delete the rows entirely.

Select the first empty row

Click the row number heading of the first blank row immediately below your last row of actual data to highlight the entire row.

Select all remaining rows

Press Ctrl + Shift + Down Arrow (Windows) or Shift + Command + Down Arrow (Mac) to select all remaining rows down to the absolute bottom of the worksheet.

Delete the rows entirely

Right-click anywhere in the highlighted row headers and choose "Delete" from the context menu. Do not choose "Clear Contents", as this will not reset the used range.

Save and reopen the workbook

Save your workbook, close it, and then reopen it. Excel recalculates and resets the used range upon saving and reopening.

Resetting the Used Range: Saving, closing, and reopening the file is a crucial step. Without it, Excel may not immediately recognize the newly reduced used range, and the file size will remain large.

Solution 2

Hide Unused Rows for a Cleaner Workspace

If deleting doesn't improve performance or you simply want to prevent users from scrolling past the data area, you can hide the unused rows.

WPS Spreadsheet Solution

Efficiently Manage and Optimize Spreadsheets with WPS Office

WPS Spreadsheet offers a highly compatible and lightweight platform to handle large datasets, quickly delete unused rows, and troubleshoot performance issues seamlessly.

1. Open your file in WPS Spreadsheet: Launch WPS Office and open your spreadsheet document.
2. Select the target rows: Click the row number below your data, then press Ctrl + Shift + Down Arrow to highlight all bottom rows.
3. Delete and save: Right-click the row numbers, select "Delete Rows", and save the file to optimize performance.

High compatibility with Microsoft Excel (.xlsx, .xls) formatsLightweight application that loads large files and resets used ranges quicklyBuilt-in intuitive tools to easily manage rows, columns, and data formattingFree to download with a familiar user interface for seamless migration

microsoft office alternative - wps office

Frequently Asked Questions

Why is my Excel file size still large after deleting empty rows?

If you only used 'Clear Contents' or pressed the Delete/Backspace key on your keyboard, the rows remain part of the used range. You must right-click the row headers and choose 'Delete,' then save, close, and reopen the file to force Excel to recalculate the used range.

How do I find the real last cell of my data?

Press Ctrl + End on your keyboard. This shortcut jumps to the last cell in the worksheet's used range. If the selection jumps far below your actual data, you have formatted unused rows that should be deleted to optimize performance.

Does deleting empty rows actually improve calculation speed?

Yes, it can. If volatile formulas, conditional formatting, or data validation rules were mistakenly applied to millions of empty rows, deleting those rows prevents the spreadsheet software from processing them during calculation, which noticeably improves speed.

What if my spreadsheet is still slow after deleting unused rows?

If performance does not improve after removing empty rows, the slowdown might be caused by overly complex volatile formulas (like INDIRECT or OFFSET), a large number of external links, heavy conditional formatting, or unoptimized COM Add-ins. You will need to investigate these elements individually.

Excel & Data Problems