CSV Cleaner & Analyzer

Upload any CSV and instantly detect issues: duplicates, empty cells, invalid emails, bad dates, inconsistent phones, and whitespace. Clean with one click.

Free online toolNo forced signupBrowser processingDeveloper Tools
📄

Drop CSV here or click to browse

All processing happens in your browser

Privacy

You can use this tool without an account. Processing stays in your browser; accounts are optional for favorites and history.

How to use

  1. Upload a CSV file by dropping it or clicking to browse.
  2. Instantly see row count, column count, and all detected issues.
  3. Click any issue to see details about affected rows.
  4. Click Clean Data to fix whitespace and formatting issues.
  5. Preview changes side-by-side, then download the cleaned CSV.

Examples

  • Clean a 12,000-row customer list with duplicate emails and bad phone numbers
  • Fix inconsistent date formats across a financial spreadsheet
  • Remove extra whitespace and standardize an exported database dump

FAQ

Is my data uploaded to a server?

No. All processing happens in your browser. Your CSV data never leaves your device.

What issues does it detect?

Duplicates, empty cells, invalid emails, bad dates, inconsistent phone numbers, and extra whitespace.

What does 'Clean Data' actually fix?

It trims whitespace, normalizes multiple spaces, and standardizes text formatting across all cells.

Is CSV Cleaner & Analyzer free?

Yes. CSV Cleaner & Analyzer is free to use on InfoChef, and the tool remains available without creating an account.

Does CSV Cleaner & Analyzer require login?

No. Login is optional and only adds convenience features such as favorites, recent tools, and synced history.

Can I use CSV Cleaner & Analyzer on mobile?

Yes. The tool page is designed to work on phones, tablets, laptops, and desktop screens.

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