How to use the CSV ↔ TSV Converter

Select the conversion direction: CSV → TSV or TSV → CSV.
Paste your data into the input box.
Click Convert. Quoted fields containing the original delimiter are handled automatically.
Copy the output or download it as a file.

CSV vs TSV: what is the difference?

CSV (Comma-Separated Values) uses a comma as the column separator. Fields that contain a comma must be wrapped in double quotes. If a field also contains a double quote, it is escaped by doubling it ("").

TSV (Tab-Separated Values) uses a tab character ( ) as the separator instead. Because tabs almost never appear inside normal text data, quoting is rarely needed, which makes TSV files simpler to parse and generate.

When to use TSV instead of CSV?

Bioinformatics and science: many genomics tools (BLAST, BED format, VCF) produce or accept TSV by default
Text fields with commas: addresses, descriptions, and notes often contain commas; switching to TSV avoids quoting issues
Copy-paste from spreadsheets: selecting cells and copying in Excel or Google Sheets produces TSV data on the clipboard
Shell scripting: awk and cut default to tab delimiter, so TSV integrates cleanly with Unix pipelines

When to keep CSV?

CSV is the more universal format. Most databases, ETL tools, and data pipelines expect CSV. When sharing data with non-technical users or systems you do not control, CSV is the safer choice.

How the converter handles edge cases

When converting CSV → TSV, any tab characters that appear inside quoted CSV fields are preserved as-is. When converting TSV → CSV, fields containing commas are automatically wrapped in double quotes so the output is valid CSV.

Privacy

All conversion happens in your browser. No data is sent to any server.