Merge multiple Excel files by matching columns

Combine 2, 3, 5 or more files — or multiple sheets from one workbook. MergeStudio checks the job size and clearly tells you where processing happens.

One merge tool
Privacy aware
You don't have to choose “small” or “large.” Add your spreadsheets and the tool classifies the job before processing.
Choose Excel or CSV files →
.xlsx · .xls · .csv · multiple files or multiple sheets
🔒 Normal jobs — local onlyProcessed in your browser. Spreadsheet contents are not uploaded.
☁️ Oversized jobs — temporary cloudWhen the cloud worker is connected, the site will tell you before upload, process temporarily, then automatically delete the files. Until then, oversized jobs are safely blocked.

One merge can connect several spreadsheets

MergeStudio is built for jobs that go beyond a basic two-file lookup. Select several Excel or CSV files, choose several worksheet tabs, or work entirely inside one workbook. For each selected sheet, choose the column that identifies the same record. The headers can be different as long as the values correspond.

Merge 3+ Excel filesJoin customers, orders, payments, CRM exports and other related files in one workflow.Merge sheets in one workbookCombine several worksheet tabs by a key or stack similar tabs into one table.VLOOKUP across multiple filesUse a visual join instead of building and maintaining lookup formulas across workbooks.

Different key names are okay

Your files do not need identical headers. Map the column that means the same thing in each source.

Customers.xlsx → Customer IDOrders.xlsx → Account NumberPayments.csv → Customer #CRM.xlsx → Client ID→ one merged spreadsheet

Common spreadsheet merge questions

Can I merge more than two Excel files at once?

Yes. MergeStudio can work with 2 or more selected spreadsheet sources in the same merge. Read the multiple-file guide.

Can I combine multiple sheets from one Excel workbook?

Yes. Upload one workbook, select two or more worksheet tabs, then either match related records or stack rows.

Do the matching columns need the same header?

No. One sheet can use “Customer ID” while another uses “Account Number.” You choose the corresponding match column separately for each source.