Rename CSV Columns

Rename headers in your CSV file with ease. Import or paste your data, edit column names directly, and export the updated CSV

Paste your input above or import a file below.
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Supported file types: .txt, .csv, .tsv, .log, .json, .xml, .md, .ini, .yaml, .yml, .html, .htm, .css
Total characters: 0
Rename Columns

How to Use:

  • Paste your CSV content into the Input CSV box or use the Choose File button to upload a text-based CSV file.
  • Supported formats include .csv, .txt, .tsv, and other plain-text types listed below the file input.
  • The tool automatically reads the first row as headers and displays editable input fields under Rename Columns.
  • Type new names for any of the columns in the provided text fields.
  • Each time you edit a field, the output updates live in the Renamed Output box.
  • The output also flashes briefly to confirm every update.
  • Use Copy Output to copy the modified CSV to your clipboard.
  • Click Export to File to download your updated CSV with new column names.
  • Use Clear All to reset the tool this clears your input, output, filename, and all header fields.
  • The Total characters counter below the output updates automatically as you rename.

What Rename CSV Columns can do:

Rename CSV Columns helps you quickly update header labels in any CSV file without opening Excel or running a script. It detects all columns in your file, presents editable fields to change their names, and rewrites the file with those changes in real time. It’s perfect for preparing datasets, formatting exports for APIs, or simply cleaning up inconsistent labels. Everything happens in the browser live and instant.

Example:

Input:

Name,Age,Location
Alice,30,USA
Bob,25,UK
Charlie,35,Canada

Renamed To:

Full Name,Years,Country
Alice,30,USA
Bob,25,UK
Charlie,35,Canada

Common Use Cases:

Use this when you need to standardize headers for merging datasets, convert exported CRM files into more readable formats, or fix column names before importing into another tool. It’s fast, lightweight, and requires no setup just paste and rename.

Useful Tools & Suggestions:

Before renaming, run Extract a CSV Column if you want to preview or double-check what’s inside. And once renamed, use Analyze CSV to confirm that your headers match the data below.

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