Merge Excel Files and Worksheets Online
Combine rows from multiple XLSX or XLS worksheets, align columns safely, and download one Excel file. Your data stays in your browser.
Add up to 20 XLSX or XLS files. You can select multiple worksheets from each file.
Files and worksheets
Header matching ignores surrounding spaces and letter case. New columns are appended in first-seen order.
A safer way to combine Excel data
Review every source and merge rule before creating the result.
Header-aware matching
Match columns by normalized header names, even when source columns appear in a different order.
Auditable output
The downloaded workbook includes a merge report with source sheets and row counts.
Local and private
Files are parsed and merged on your device and are never uploaded to a server.
How to merge Excel files
Combine spreadsheets in three clear steps.
Add Excel files
Choose up to 20 XLSX or XLS files and select the worksheets to include.
Confirm the merge rules
Choose each header row and align columns by header name or column position.
Preview and download
Create the merged preview, check the row and column totals, then download XLSX.
Related conversions
Jump to a reverse or related contact file conversion.
Excel merger — FAQ
Are my Excel files uploaded?
No. Reading, merging, previewing, and exporting all happen locally in your browser.
Can I merge sheets with columns in a different order?
Yes. Header matching aligns columns by name and fills missing columns with blank cells. You can also merge strictly by column position.
What happens to formulas?
Formulas are saved as their last calculated values because moving rows can break references. Files with formulas that have no saved result are blocked.
Are all Excel features and styles preserved?
Basic cell values, types, number formats, and supported styles are retained where possible. Charts, images, macros, pivot tables, and other advanced objects are not guaranteed.
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