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Bethemesh
Data and spreadsheets

Merge Excel or CSV files

Drop several CSV or Excel files and merge their rows into a single table with automatic column alignment.

  • 100% local
  • Instant
  • Free
  • No account
  • Works offline
  • Batch processing

Your files are processed locally in your browser and are never sent to our servers.

Drop your file here

Recommended size: up to 50 MB

Columns with the same name are aligned automatically. Missing columns remain empty.

Merge multiple Excel or CSV files into one table while aligning available columns.

Guide

How to use this tool

  1. 1

    Add the files

    Drop the tables to combine.

  2. 2

    Review columns

    Check how columns align in the preview.

  3. 3

    Merge and export

    Generate the consolidated file.

Tips and best practices

  • Work on a copy when your data is important.
  • Review the result before reusing it in another application.
  • Processing takes place directly in your browser.

Frequently asked questions

Must files have identical columns?

Shared columns make merging easier. Missing columns may result in empty cells depending on the engine.

Is my data uploaded?

No. Processing happens locally in your browser.

Can I use this tool for free?

Yes. The tool is free and requires no account.

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