Free Excel combiner
Merge Excel files into one sheet
Drop your .xlsx or .xls workbooks and merge every sheet into a single table. Everything runs in your browser — no macros, no Power Query, no uploads.
Files are processed in your browser. Nothing is uploaded.
How it works
- Step 1
Drop your workbooks
Add as many Excel files as you like. Every tab is read automatically.
- Step 2
We stack the rows
Matching columns line up and a source column shows where each row came from.
- Step 3
Download or ask
Export one clean CSV, or ask questions across the data with AI.
Merge XLSX, XLS and CSV files in one go
Drop any mix of .xlsx, .xls and .csv files. Every sheet in every workbook is read, columns are lined up by header name, and the rows are stacked into one table with a source column showing the file and sheet each row came from.
It's the same result as Excel's Power Query From Folder, without building a query — useful for a one-off merge, or when you're on a computer without Power Query.
Your files stay on your computer
Most online Excel mergers upload your workbooks to a server. This tool reads them inside your browser tab, so customer, payroll or finance data never leaves your machine. Close the tab and it's gone.
Frequently asked questions
How do I merge multiple Excel files into one?
Drop the files above. Analistable reads every sheet and stacks the rows into one table you can download as CSV.
Are my files uploaded to a server?
No. Files are read and combined inside your browser, so your data never leaves your computer.
Can I combine files with different columns?
Yes. Columns are matched by name; missing values are left blank.
Is it free?
Combining and downloading is free. Create an account to ask AI questions across your sheets.
Can I merge Excel files into one sheet online for free?
Yes. Drop the files above and download the merged sheet as CSV. It's free, and the files are processed in your browser rather than uploaded.
Can I merge .xls and .xlsx files together?
Yes. Old .xls workbooks, .xlsx workbooks and CSV files can be combined in the same merge.
Go beyond combining
Connect Google Sheets and Excel, link related data and ask questions in plain language.
Try Analistable free