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CSV/TSV Converter

Parse CSV/TSV data and convert to JSON, SQL, HTML, or Markdown.

All processing happens locally in your browser. No data is sent to any server. GDPR/DORA compliant.

Input

Delimiter

First row is header

Output Format

CSV-injection guard Prefix cells starting with = + - @ with ' so spreadsheets treat them as text, not formulas (OWASP). Plain numbers such as -5 are left as numbers.

CSV / TSV Input

Output

CSV Reference

CSV Rules (RFC 4180)

Fields separated by delimiter
Rows separated by newlines
Quote fields with commas
Escape quotes with ""

Common Delimiters

, - Comma (CSV)
\t - Tab (TSV)
; - Semicolon (EU)
| - Pipe

Output Formats

JSON (objects) - header keys each row
JSON (2D array) - raw rows
CSV / TSV - clean, RFC 4180 quoted
SQL INSERT - database imports
Markdown / HTML - docs & web tables

Tips

Set Input to JSON to convert JSON → CSV
Newlines inside quotes are preserved
Keep the injection guard on (the default) before opening output in Excel
CSV ↔ JSON round-trips without loss