Free spreadsheet tool

Merge Spreadsheets

Combine Excel or CSV tables into one file by matching column headings, even when the column order differs.

Files stay on your deviceCSV, TSV or XLSX ยท Up to 10 MB per file
Try a sample first

Explore the tool with example spreadsheet data before using your own file.

Limits: 50,000 data rows and 500,000 cells per result. Excel files: one selected worksheet per file. Only table values are exported.

How to use this tool

  1. Choose two or more files containing tables with a header row.
  2. For Excel files, select the worksheet from each workbook.
  3. Merge and review the combined table. Columns are matched by exact heading; missing columns are left blank.

What to check

This appends records; it does not join records by an ID or remove duplicates. Headings must be unique and spelling must match. The result contains values only.

Does this tool upload my files?

No. Processing happens in your browser. The tool does not send spreadsheet contents to Tech Tycoon or to an AI service. Your original file is unchanged.