Merge Excel Files Online
- ✓ 100% Free
- ✓ No upload — runs in your browser
- ✓ No signup
- ✓ No ads
Combine multiple Excel files (.xlsx, .xls) and CSV files into one workbook — free and online. Merge xlsx files with different column schemas using union merge, no data lost.
Drop files here or click to browse
Supports .xlsx, .xls, .csv — multiple files
How to Merge Excel Files
- Select or drag your Excel (.xlsx, .xls) or CSV files into the upload area above.
- Click Merge Files. Processing happens instantly in your browser.
- Download the merged
merged_data.xlsxfile.
Combine Multiple Excel Files into One
Whether you need to combine Excel files online for free or merge dozens of xlsx exports into a single master workbook, this tool stacks every row from every file — and every sheet — into one downloadable spreadsheet. No installs, no signup, and your files never leave your browser.
Common Use Cases
- Combine monthly sales reports from different regions into one file.
- Merge multiple xlsx files exported from different systems for analysis.
- Combine Excel files with different column schemas without losing any data.
- Consolidate many spreadsheets into a single master workbook for reporting.
- Track data origin with auto-added
Source_FileandSource_Sheetcolumns.
DataMani vs Typical Online Excel Mergers
Most online tools to merge Excel files upload your spreadsheets to a server, limit the free tier, or require an add-in or account. DataMani combines your files entirely in your browser — free, with no upload and no signup.
| DataMani | Typical online mergers | |
|---|---|---|
| Price | Free, no limits | Free tier, paid add-in, or credits |
| Files uploaded to a server | No — stays in your browser | Usually yes |
| Different column schemas | Union merge — no data lost | Varies; often manual |
| Signup / install | None | Often required |
| Ads | None | Common |
Frequently Asked Questions
How do I combine multiple Excel files into one?
Drag all your .xlsx, .xls, or .csv files into the box above and click Merge Files. Every row from every file and sheet is combined into one downloadable Excel workbook.
Is it free to merge Excel files online?
Yes, completely free with no signup. Processing runs in your browser, so there are no upload limits and your data stays private.
What if the files have different columns?
DataMani performs a union merge — the output contains all columns from all files. Columns missing in a particular source are filled with empty values.
Can I mix Excel and CSV files?
Yes. You can merge .xlsx, .xls, and .csv files together in a single operation.