Free CSV escape & unescape tool — quote fields with commas, quotes and newlines (RFC 4180)

Escaping runs entirely in your browser — nothing is uploaded.

📊 CSV Escape / Unescape — Free Online Tool

Escape and unescape CSV fields online, free. CSV field escaping makes a value safe for a comma-separated file: per RFC 4180, a field containing a comma, double quote, or line break is wrapped in double quotes, and any inner double quote is doubled. This tool quotes fields that need it (and unquotes them), entirely in your browser, so your spreadsheet data stays intact.

🚀 Why use this CSV Escape / Unescape tool?

It follows RFC 4180 — only quoting fields that actually contain a comma, quote, or newline — so simple values stay clean and complex ones never break the columns. 100% free, no registration, and complete privacy — everything runs locally in your browser, so your data never touches a server.

Key Features

📦RFC 4180 quoting

Wraps a field in double quotes when it contains a comma, quote or newline, and doubles inner quotes ("").

🔁Escape & unescape

Quote a raw field for CSV, or strip quoting from an existing quoted field.

Instant & in-browser

Runs locally with no upload — safe for customer or financial data.

🔒100% private

Your spreadsheet rows and field values never leave your device.

Popular Use Cases

Building CSV

  • Escape fields with commas
  • Quote multi-line values
  • Hand-build a CSV row

Data export

  • Prepare values for export
  • Fix fields that break columns
  • Encode addresses/notes

Debugging

  • Unquote a CSV field
  • Inspect doubled quotes
  • Recover the raw value

What It Handles

Modes

  • Escape (value → CSV field)
  • Unescape (field → value)

Handles

  • Commas in values
  • Inner quotes (→ "")
  • Line breaks

Privacy

  • Client-side only
  • No network calls
  • Runs offline

Sources & References

Frequently Asked Questions

How do I escape a comma in a CSV field?

Wrap the whole field in double quotes. Per RFC 4180, a field that contains a comma, a double quote, or a line break must be enclosed in double quotes — so San Francisco, CA becomes "San Francisco, CA". The comma inside the quotes is then treated as data, not a column separator.

How are double quotes escaped inside a CSV field?

By doubling them. A literal " inside a quoted field is written as two double quotes "". For example the value 6" nail becomes "6"" nail". This tool wraps and doubles automatically when the field needs it.

When does a CSV field NOT need quoting?

If the field contains no comma, no double quote and no newline, it can be written bare. This tool follows RFC 4180 and only adds quotes when one of those characters is present, keeping simple values clean.

Does the CSV escaper upload my data?

No. Quoting and unquoting run in your browser. Your spreadsheet rows and field values never leave your device — safe for customer or financial data.

How do I unescape a quoted CSV field?

Paste the quoted field (e.g. "San Francisco, CA") and click Unescape. The tool strips the surrounding quotes and collapses each doubled "" back to a single quote, returning the raw value.

🎓 Pro Tips

  • Tip 1: Only quote fields that need it (comma, quote, or newline) — over-quoting every field is valid but harder to read.
  • Tip 2: A literal double quote inside a field is doubled (""), not backslash-escaped — CSV has no backslash escape.
  • Tip 3: If a value spans multiple lines, it must be quoted; many parsers break on unquoted embedded newlines.