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Merge CSV Files

Merge two CSV tables with identical headers.

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  1. 01

    Add your input

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  2. 02

    Make it yours

    Adjust the options and run the action.

  3. 03

    Take the result

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Merge two CSV tables with identical headers online

Append one export to another with the same table layout. Headers must match; this appends rows rather than joining by key.

How to use it

Enter the source input or select Try example. Provide the second input in the second editor. Review the displayed input. Select Run tool and inspect the result before copying or downloading.

Worked examples

Append one export to another with the same table layout.

Worked example — Merge CSV Files

Settings: No additional options

Input:

name,age
Anna,25

SECOND INPUT:
name,age
Ben,30

Output:

name,age
Anna,25
Ben,30

The example output has 3 lines. Compare its order, separators and whitespace with the input before copying the result.

Choose the right tool

Merge appends records from tables with identical headers. It does not match records by an ID. Choose Join CSV Tables when you need key-based alignment.

Limitations and common mistakes

  • Headers must match; this appends rows rather than joining by key.

Frequently asked questions

How can I combine two CSV tables with identical headers online?

Enter the source input or select Try example. Provide the second input in the second editor. Review the displayed input. Select Run tool and inspect the result before copying or downloading.

Where is my input processed?

The bundled tool processes input in your browser. It does not upload tool input to a conversion service. Other site plugins, analytics, advertising and browser extensions may have separate behavior.

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