What Is a TSV to CSV Converter?
A TSV to CSV converter transforms tab-separated values into comma-separated values (or other delimiters like semicolons and pipes). TSV files are commonly exported from spreadsheets, databases, and text editors — converting them to CSV makes the data compatible with a wider range of tools, databases, and programming languages. This tool runs 100% in your browser — your data is never uploaded to any server.
It supports pasting tab-separated text, file upload, drag-and-drop, URL import, configurable output delimiters, header row toggle, row and column count display, copy to clipboard, and instant download.
How to Use This Tool
Add Your TSV Data
Paste tab-separated text into the input area, click Upload to select a .tsv or .txt file, drag and drop a file, or use URL Import to fetch data from a remote address.
Configure Settings
Choose your preferred output delimiter (comma, semicolon, or pipe). Toggle header row on or off depending on whether your first row contains column names.
Convert
Click Convert to CSV to generate the output. The tool parses each tab-separated row and re-joins cells with your chosen delimiter, properly quoting any values that contain the delimiter.
Copy or Download
Copy the converted CSV to your clipboard or download it as a .csv file. Review the row and column count to verify the data converted correctly.
Features Explained
Tab-Separated Input Parsing
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The tool reads tab-separated values using a robust CSV parser that handles quoted fields, embedded tabs, newlines within quotes, and escaped double quotes. It correctly parses even complex TSV data that simpler split-based approaches would break on.
Configurable Output Delimiter
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Choose comma, semicolon, or pipe as the output delimiter. Comma is the default and most universal CSV format. Semicolons are common in European locales where commas are used as decimal separators. Pipes are useful when your data contains both commas and semicolons.
File Upload & Drag-and-Drop
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Upload a .tsv, .txt, or .csv file using the Upload button, or drag and drop a file directly onto the input area. The file contents are loaded into the textarea for conversion.
URL Import
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Click URL Import to fetch a TSV file from any remote address. The request goes directly from your browser to the target server — no intermediary.
Header Row Toggle
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When enabled, the first row is treated as column headers. This setting is preserved across sessions and helps tools that consume the output CSV correctly identify the header row.
Smart Quoting
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Values that contain the output delimiter, double quotes, or newlines are automatically wrapped in double quotes. Existing double quotes within values are escaped by doubling them, following the RFC 4180 CSV standard.
Copy & Download
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Copy the entire converted CSV to your clipboard with one click (shows Copied! for 1.5 seconds), or download it as a .csv file. The row and column count is displayed so you can verify the conversion.
LocalStorage Persistence
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Your input data, converted output, and all settings are automatically saved to your browser's local storage. If you close the tab or refresh the page, your data will be restored.
Who Is This Tool For?
Data Analysts
Convert TSV exports from databases and analytics tools into CSV for loading into spreadsheets, visualization software, or data pipelines.
Developers
Transform tab-separated log files, configuration data, or API exports into CSV for processing with standard libraries and tools.
Database Administrators
Convert TSV database dumps and query results into CSV for import into other database systems or reporting tools.
Researchers
Transform tab-delimited datasets from scientific instruments, statistical software, or public data repositories into universal CSV format.
Spreadsheet Users
Convert tab-separated data copied from Excel, Google Sheets, or other spreadsheet applications into properly formatted CSV files.
Students & Learners
Understand the difference between TSV and CSV formats while learning data manipulation and file format fundamentals.
TSV vs CSV Comparison
| Feature | TSV | CSV |
|---|---|---|
| Delimiter | Tab character (\t) | Comma (,) |
| Common Extensions | .tsv, .txt | .csv |
| Quoting Required | Rarely (tabs in data are uncommon) | Often (commas appear in text) |
| Human Readability | Good (aligned columns in editors) | Moderate (commas can be hard to scan) |
| Spreadsheet Support | Most applications | Universal |
| Database Import | Supported by most tools | Default format for most tools |
| Clipboard Copy | Default from Excel/Sheets | Requires explicit export |
Tips for TSV to CSV Conversion
Copy from Excel or Google Sheets
When you copy cells from a spreadsheet, the clipboard data is tab-separated by default. Paste it directly into the input area for instant conversion.
Use semicolons for European data
If your data contains decimal commas (e.g., 3,14 instead of 3.14), use semicolon as the output delimiter to avoid ambiguity between data commas and delimiter commas.
Check the row count
After conversion, verify the row and column count in the output toolbar matches your expected data dimensions. A mismatch may indicate parsing issues.
Handle special characters
The tool automatically quotes values that contain the output delimiter, newlines, or double quotes. You don't need to pre-process your data.
Use URL Import for remote files
If your TSV data is hosted online, use URL Import to fetch it directly instead of downloading and re-uploading. The fetch happens entirely in your browser.
Clear before new conversions
Use the Clear button to reset everything (input, output, settings, and local storage) before starting a fresh conversion to avoid mixing data.
Privacy & Security
This tool runs 100% in your browser. Your TSV data is never uploaded to any server. All parsing and conversion happens locally using JavaScript.
Your input and output are saved only in your browser's local storage so they persist when you refresh the page. You can clear them at any time using the “Clear” button. No cookies are used, no analytics track your data content, and no third-party services have access to what you convert.