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QUESTACE · FREE ONLINE TOOL

Excel & CSV Merger

Combine multiple Excel XLSX and CSV files into one spreadsheet with matching column headers.

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Enter your details below and get your result in seconds.

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Files are combined by column heading, not by column position. Matching headings are merged together; columns missing from a file are left blank.

Maximum 50 MB per file. The first worksheet and first row (column headings) are used. Each file supports up to 100,000 data rows.

How it works
  1. Select at least two files.
  2. Matching column headings are combined automatically, even if columns appear in a different order.
  3. Download one combined XLSX or CSV file.

Tip: make sure the first row in each file contains column headings.

Privacy reminder — avoid uploading confidential or sensitive documents. Download your result and keep a copy of your original file.