RomitCSV
Free Online TSV to CSV Converter

Convert TSV to CSV

Turn tab-separated rows into comma-separated values for spreadsheets, imports, and data tools. Preview every row before copying or downloading the CSV.

Drop your TSV file hereorTSV file · Up to 50 MB
PASTE TSV

Start with tab-separated text

Tabs between fields define the columns.

TSV TO CSV GUIDE

Convert tab-separated data into CSV rows

TSV stores table data with a tab character between neighboring fields. CSV uses commas between fields and is accepted by many spreadsheet programs, databases, and import tools. This TSV to CSV converter reads each tab-separated row and produces a comma-separated file while keeping the cell order and row order intact.

How tab-separated input is read

Tabs mark the boundaries between columns, and line breaks mark the boundaries between records. A row with fewer fields than another row is completed with empty cells so the table stays rectangular. Completely blank lines are skipped. Quoted TSV fields are also supported: a quoted value can contain a tab or line break, and doubled quotes inside a quoted value represent one literal quote.

How values are written in CSV

CSV needs quotation marks around a value when it contains a comma, quotation mark, or line break. The converter adds those quotes when needed and doubles any quotation marks inside the field. A tab in a cell is ordinary text in CSV, so it does not need quoting for the comma delimiter, although it remains part of the cell value.

Steps to convert TSV to CSV

  1. Drop a .tsv file into the upload area, browse for one, or paste tab-separated text.
  2. Review the data table to make sure the tabs divided the intended columns.
  3. Select Convert to CSV to generate comma-separated output.
  4. Copy the CSV or download it as a .csv file.

The table preview includes all parsed rows. The conversion keeps cell values as text and does not infer dates or numbers, calculate formulas, or preserve spreadsheet formatting. Files up to 50 MB are read and converted in your browser; they are not uploaded to RomitCSV.

Frequently asked questions

How do I paste TSV data?

Paste text where each column is separated by a real tab character and each row starts on a new line. The sample area shows the expected layout.

Will commas inside a TSV value break the CSV?

No. The converter surrounds fields containing commas with quotes, so the comma stays inside that CSV cell.

What if a TSV field contains a tab or line break?

Put the field in quotes in the TSV input. The parser keeps those characters inside the cell and the CSV writer applies quoting where needed for CSV.

Can I open the downloaded CSV in Excel or Google Sheets?

Yes. The output is standard comma-separated text that spreadsheet applications can import or open. Some regional settings may expect a different CSV separator.

Does the converter keep formulas and formatting?

No. It converts the text in the TSV file. It does not calculate formulas or carry over spreadsheet colors, number formats, or styles.

Is my TSV file uploaded?

No. The page processes the selected file locally in your browser.

Related converters

Convert comma-separated data to TSV with CSV to TSV, or convert CSV rows to JSON and Markdown. Browse all CSV tools for more formats.