TSV to CSV Converter
Handle Million Rows in Your Browser

Convert TSV files to CSV format instantly in your browser. Handles million-row files with zero upload.

Drag & drop your file here, or browse

Accepts: .tsv (up to 500 MB)

Your data stays in your browser. By using this tool, you agree to our Terms and Privacy Policy.

How to Convert TSV to CSV

Drag and drop your TSV file onto the drop zone, or click to browse and select a file. You can also paste tab-separated data directly.

Conversion starts automatically and a preview is displayed.

Click the "Download CSV" button to save the converted result.

Key Features

100% Local Processing: Your files are never uploaded to a server. All conversion happens in your browser using WebAssembly, so your sensitive data stays private.
Handles Millions of Rows: Powered by DuckDB-WASM, this tool converts TSV files with over 1 million rows in seconds.
Paste from Excel: Copy cells from Excel or Google Sheets and paste directly. The clipboard data is tab-separated, so this tool handles it natively.

TSV vs CSV: Key Differences

TSV (Tab-Separated Values) uses tab characters as delimiters, while CSV (Comma-Separated Values) uses commas. TSV avoids issues with commas in data fields.

Feature	TSV	CSV
Delimiter	Tab character	Comma
Quoting	Rarely needed	Required for commas in values
Compatibility	Spreadsheet exports	Universal
File Extension	.tsv	.csv

Benefits of Converting TSV to CSV

CSV is more universally supported across tools and platforms.
Many data import tools expect CSV format by default.
CSV files can be opened directly in Excel, Google Sheets, and most databases.

Frequently Asked Questions

How do I use this tool?

Simply drag and drop your CSV file onto the drop zone at the top of the page, or click to browse and select a file. Conversion starts automatically, and you can download the JSON file once it's complete.

Can this tool handle large files?

Yes. This tool uses DuckDB-WASM to process files entirely in your browser using WebAssembly. It can handle large files depending on your device's available memory.

Is my data uploaded to a server?

No. Your file never leaves your browser. All processing happens locally using WebAssembly. No data is sent to any server.

What browsers are supported?

Any modern browser that supports WebAssembly: Chrome, Firefox, Edge, Safari (14+). Chrome is recommended for best performance with large files.

Is it free?

Yes, this tool is completely free with no row limits.