Convert TXT to CSV Online

Free online TXT to CSV converter - no upload, no signup

Paste text or choose a .txt file, pick how it is structured, and get CSV - all in your browser.

Delimited text, key=value logs, one value per line, JSON Lines, or extract fields with a regular expression.

How to Convert TXT to CSV (3 Steps)

1. Paste your text or choose a .txt file. Use the box above (up to 10M); the text stays in your browser.
2. Pick the structure and press Convert. Auto-detect handles most files - delimited, key=value, one value per line or JSON Lines.
3. Download the CSV. Save the generated .csv file. The data never leaves your computer.

Online vs App

Same job, two ways — pick the one that fits your file:

In short: this page is best for a quick, small file. For large files or batch jobs, use the DataFileConverter desktop app — it also ships a command line for scripts and scheduled runs.

What to Know About TXT to CSV

• A plain .txt file has no schema, so the tool has to be told how rows are shaped - that is what the structure selector is for.
• Delimited treats the first line as the header and writes it as the CSV header row.
• Fields that contain a comma, a double quote or a line break are quoted the standard RFC 4180 way.
• Extract runs a regular expression over the whole text; each capture group becomes a column.
• Conversion runs locally with JavaScript - your text is never uploaded to a server.

Frequently Asked Questions

Is this TXT to CSV converter free?

Yes. The online converter is completely free and needs no account or email.

Is my text uploaded to a server?

No. The conversion runs entirely in your browser, so your text never leaves your device.

How are commas and quotes in the data handled?

Fields that contain a comma, a double quote or a line break are wrapped in double quotes, and an inner double quote is doubled - standard RFC 4180 CSV.

What if my TXT has no delimiter?

Use the Lines mode to get one row per line, or the Extract mode to pull matching fields out of the text with a regular expression.

Related Tools

TXT to JSON | TXT to XML | CSV to JSON | JSON to CSV | TSV to Excel | Merge text files

Need bigger files or batch conversion?

If this service cannot convert your data correctly, or your files are big than 10M, or you want a batch conversion, you can use Data File Converter to Convert TXT to CSV Offline.

Want to stay in the browser? Subscribe (from $5/month) to raise the online limits.

If you have any question or suggestion, please contact us.