CSV Header Cleaner

Clean and standardise CSV column headers. Convert to snake_case, camelCase or kebab-case, remove accents and symbols, name blank headers and fix duplicate names.

  • Free, no sign-up
  • Runs in your browser
  • Your data stays private

How to use the CSV Header Cleaner

  1. Paste a CSV table, or a list of header names.
  2. Choose a naming style and options such as accent removal and duplicate handling.
  3. Copy the cleaned table and review the before and after table.

Why use this CSV Header Cleaner

  • Naming stylessnake_case, camelCase, PascalCase, kebab-case, lowercase, Title Case or tidy-only.
  • Duplicate fixRepeated names become total, total_2, total_3.
  • Blank headersEmpty headers are named column_N so nothing is left unnamed.
  • Database safeLength limits, no leading digits and optional prefixes.

Frequently asked questions

How do I convert CSV headers to snake_case?

Paste the CSV with "Naming style" set to snake_case. Only the header row changes.

What happens with duplicate column names?

A number is added to the later ones, such as price and price_2.

Can I clean a list of names instead of a full file?

Yes. Paste one name per line and the tool switches to list mode automatically.

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