BYTETOOLS

TSV to CSV Converter

Convert TSV to CSV online, or CSV to TSV with one toggle. Fields with commas, quotes or newlines are quoted correctly. 100% local, in your browser.

Drop a .tsv or .csv file here or click to browse
  • Two-way conversion: TSV to CSV or CSV to TSV
  • Automatic quoting of fields with commas or tabs
  • Handles quoted fields and embedded newlines
  • Paste data or drop a file to load it
  • Copy to clipboard or download the result
  • 100% private — nothing is uploaded

How to use the TSV to CSV Converter

  1. 1

    Paste your data, or drop a .tsv or .csv file to load it.

  2. 2

    Choose the direction — TSV → CSV or CSV → TSV.

  3. 3

    Click Convert to re-delimit every row.

  4. 4

    Check that the columns line up in the output.

  5. 5

    Copy the result or download the converted file.

About the TSV to CSV Converter

The ByteTools TSV to CSV Converter switches tab-separated values to comma-separated values, and back again with a single direction toggle. Paste your data or drop a file, and the tool re-delimits every row while quoting any field that contains a comma, quote or line break.

The conversion is 100% local in your browser with JavaScript — your data is never uploaded to a server. That keeps spreadsheet exports, database dumps and clipboard copies from Excel or Sheets private while you reformat them.

It is handy when a tool insists on one delimiter but your data uses the other — for example pasting a tab-separated table copied from a spreadsheet into a system that only accepts CSV. Fields are parsed with full quoting rules so tabs or commas inside values never corrupt the columns.

Frequently asked questions

What is the difference between TSV and CSV?

Both store tabular data as plain text, but TSV separates columns with tab characters while CSV uses commas. TSV avoids quoting issues when values contain commas, whereas CSV is more widely supported by spreadsheet and data tools.

How does the converter handle commas inside my TSV data?

When converting to CSV, any field that contains a comma, double quote or line break is automatically wrapped in double quotes, and internal quotes are doubled. This keeps the value in a single column when the CSV is reopened.

Can I convert CSV back to TSV?

Yes. Switch the direction toggle to CSV → TSV and the tool parses your comma-separated data and re-emits it with tab separators, unwrapping any quoted fields in the process.

Why did my spreadsheet paste come in as TSV?

When you copy cells from Excel or Google Sheets, they are placed on the clipboard as tab-separated text. Paste that here, keep the direction on TSV → CSV, and convert to get a proper CSV file.

Is my data uploaded during conversion?

No. The conversion runs entirely in your browser with JavaScript, so your data stays on your device and is never sent to a server.

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