Fix CSV delimiters

Does Excel put everything in one column? Detect a file’s delimiter and re-export it in a consistent CSV format.

Workspace

Runs locally in your browser. No file upload.

Private, on-device processing
↑Drop a file here or choose oneRead locally · No upload · Size limits vary by tool

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How it works

Regional Excel settings can expect different delimiters. Our parser reads quoted commas, escaped double quotes and multi-line quoted cells instead of performing a naïve string split. The preview shows the detected columns. Choose comma, tab, semicolon or pipe for the export.

Important limitations

Malformed quoting and incomplete rows produce warnings. This tool preserves ambiguous data; it does not invent missing columns or irrecoverable missing quote boundaries.

Frequently asked questions

Are my files uploaded?

No. The file is processed in your browser. This version does not transmit user file content to any server.

Is csv delimiter detector & repair free?

Yes. The browser processing tools are free and do not require an account or API key.