Convert TSV to CSV Online Free

Convert tab-separated data to comma-separated format. Tabs are replaced with commas, and values containing commas are properly quoted. Universal CSV output works with any spreadsheet or database.

Quick Answer

To convert TSV to CSV, drop your .tsv file onto the converter. Tab delimiters are replaced with commas, and any values containing commas, quotes, or newlines are automatically quoted per CSV standards. Runs instantly in your browser.

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Works offline

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Convert TSV to CSV

Drop your TSV file here to convert it instantly

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Drag & drop your .tsv file here, or click to browse

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TSV vs CSV: Format Comparison

Key differences between the two formats

Feature	TSV	CSV
Delimiter	Tab character (\t)	Comma (,)
Quoting	Rarely needed	Required for values with commas
Readability	Aligned columns in text editors	Columns not aligned
Compatibility	Some tools (databases, bioinformatics)	Universal (Excel, databases, APIs)
Embedded commas	No issues (different delimiter)	Must be quoted
Embedded tabs	Must be quoted or escaped	No issues (different delimiter)
File extension	.tsv or .txt	.csv

When to Convert

Common scenarios where this conversion is useful

Opening data in Excel

Excel handles CSV imports more reliably than TSV in many locales. Convert TSV to CSV for seamless opening in spreadsheet applications.

Database imports

Most database import tools default to CSV. Convert your TSV exports to CSV for loading into MySQL, PostgreSQL, or SQLite.

Data processing pipelines

Many data processing tools and libraries (pandas, R) handle CSV by default. Convert TSV data for easier integration.

API data submission

Web APIs that accept file uploads typically expect CSV format. Convert your TSV data files to CSV for API compatibility.

How to Convert TSV to CSV

1

Upload your TSV file

Drag and drop your .tsv file onto the converter, or click to browse. Tab-separated text files with any extension are accepted.
2

Automatic conversion

Tab delimiters are parsed and replaced with commas. Values containing commas or quotes are automatically wrapped in double quotes.
3

Download the CSV result

Click Download to save your .csv file. The output follows RFC 4180 CSV formatting standards.

Frequently Asked Questions

Is the conversion just replacing tabs with commas?

No. The converter properly parses the TSV structure and handles edge cases. Values that contain commas, double quotes, or newlines are automatically quoted in the CSV output.

What about values that contain commas?

Values containing commas are wrapped in double quotes in the CSV output, so the comma is treated as part of the value, not a delimiter.

Are empty cells preserved?

Yes. Empty tab-delimited cells become empty comma-separated cells. The column structure is fully preserved.

What about header rows?

Header rows are converted along with data rows. The converter does not distinguish between headers and data.

Does it handle quoted TSV fields?

Yes. If your TSV file uses quoted fields (less common but valid), the quotes are preserved or re-applied as needed in the CSV output.

What encoding does the output use?

The output is UTF-8 encoded, matching the input encoding. All international characters are preserved.

Can I convert large TSV files?

Yes. The converter handles files with millions of rows depending on your device's available memory.

Is my data private?

Yes. The conversion happens entirely in your browser. No data is sent to any server.

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