Merge Excel Files — Free, Fast & Private
The fastest free tool to merge Excel files online. Combine 2 Excel files or merge multiple Excel workbooks into one master file — all inside your browser. No upload. No signup. Your data never leaves your computer.
Drop your files here
or click to browse
How it Works
Select Your Excel Files
Choose 2 or more Excel workbooks (.xlsx, .xls, .csv) you want to merge. Drag and drop them into the tool or click to browse your computer.
Arrange the Order
Drag and drop your files to set the exact sequence for your merged result. The output will follow the order you set.
Choose Merge Options
Decide how to merge: combine all data into one sheet, keep each file as a separate sheet in one workbook, or merge only specific columns. Works for 2 files or dozens at once.
Process Instantly In-Browser
Everything runs locally inside your browser. No data is ever uploaded to any server. Your Excel files stay 100% private — safe for confidential financial, HR, and business data.
Download Your Merged File
Your merged Excel workbook is ready to download immediately. No waiting, no email, no account required.
Frequently Asked Questions
How do I merge Excel files into one?
Upload your Excel files using the tool above, choose whether to merge into one sheet or keep as separate sheets in one workbook, then click Merge and download your file. No signup required.
How do I merge 2 Excel files into one?
Simply upload both .xlsx or .xls files, choose your merge option (one sheet or separate sheets), and click Merge. The combined workbook downloads instantly to your computer.
How do I merge multiple Excel files into one sheet?
Upload all your Excel files and select the 'Combine into one sheet' option. All rows from every file will be stacked into a single worksheet. Column headers are matched automatically.
How do I merge several Excel files into one workbook?
Upload all files and choose 'Keep as separate sheets'. Each file becomes its own named tab in the output workbook — perfect for combining monthly reports into one annual file.
How do I merge Excel files with different columns?
Our tool automatically detects and aligns matching column headers across files. Columns that exist in some files but not others are included with blank values where data is missing.
Can I merge CSV files with Excel files?
Yes. You can mix .xlsx, .xls, and .csv files in a single merge operation. The output is a standard .xlsx file compatible with all versions of Microsoft Excel.
Is there a limit on how many Excel files I can merge?
There is no artificial file count limit. You can merge as many Excel files as your browser memory allows — most users merge dozens of large spreadsheets without any issues.
Will merging Excel files change my formatting?
Our tool preserves cell styles, formatting, and formulas as much as possible. For very complex workbooks with advanced macros or pivot tables, we recommend a quick review of the merged output.
Is it safe to merge Excel files with sensitive data?
Yes — completely safe. Your files are never uploaded to any server. All processing happens locally inside your browser. Your data stays on your computer at all times.
Do I need Microsoft Office to merge Excel files?
No. MergeExcelFiles.org works entirely in your browser — Chrome, Edge, Safari, Firefox. No Microsoft Office, no software installation, and no account required.
How do I merge Excel files into one workbook with multiple sheets?
Upload your files and select 'Keep as separate sheets'. Each uploaded Excel file becomes its own named worksheet in the output .xlsx file. You can rename sheets before downloading.
How do I merge Excel files and remove duplicate rows?
After merging, use Excel's built-in Remove Duplicates feature (Data tab → Remove Duplicates) or ask our AI Assistant to write a VBA macro that removes duplicates automatically from the merged sheet.