What is TSV and how does it differ from CSV?

TSV (Tab-Separated Values) uses a tab character as the field delimiter instead of a comma. Because tabs rarely appear inside data values, TSV files typically do not need the quoting and escaping rules that CSV requires, making them simpler to parse.

What output format does this tool produce?

The tool produces a JSON array of objects. Each data row becomes one object whose keys are the column names from the first (header) row and whose values are the corresponding field values from that row.

What does "Parse numbers & booleans" do?

With this option enabled, field values that look like integers or decimals are converted to JSON numbers, and the strings "true" and "false" (case-insensitive) are converted to JSON booleans. All other values remain strings. Disable the option to keep every value as a string.

Is my data sent to a server?

No. All parsing and conversion happens entirely in your browser using JavaScript. Your TSV data never leaves your device, making this tool safe for sensitive or proprietary files.

What file size can I convert?

Because processing runs in-browser there is no server-side file size limit. Files up to a few megabytes convert in well under a second. Very large files (tens of megabytes) may take a few seconds depending on your device.

What happens if a row has more or fewer columns than the header?

Short rows are padded with empty strings for any missing columns. Extra columns beyond the header width are appended with auto-generated keys ("col_N") so no data is lost.

TSV to JSON Converter

Name: TSV to JSON Converter
Availability: InStock
Author: Nham Vu

Paste or upload a TSV file and convert it to a formatted JSON array of objects instantly — all processing happens in your browser.

TSV Input

Load File

Options

Trim whitespace Parse numbers & booleans

JSON Output

Paste TSV above and click Convert.

A sample TSV has been pre-loaded so you can try it right away.

Copied!

Summary

Paste or upload a TSV file and convert it to a formatted JSON array of objects instantly — all processing happens in your browser.

How it works

Paste your TSV text into the input area, or click "Load File" to open a .tsv or .txt file from your device.
The first row is automatically used as the header — each column name becomes a JSON object key.
Toggle "Trim whitespace" to strip leading and trailing spaces from each field value.
Toggle "Parse numbers & booleans" to coerce numeric strings and true/false values to their native JSON types.
Click "Convert" to see the formatted JSON output.
Use "Copy" to copy the JSON to your clipboard, or "Download .json" to save the file.

Use cases

Converting spreadsheet exports (Google Sheets, Excel) saved as TSV to JSON for web apps.
Transforming database query results exported as tab-delimited text into JSON for APIs.
Preparing test fixture data by converting a TSV sample to JSON arrays of objects.
Moving data between tools that only accept JSON (dashboards, charting libraries, NoSQL databases).
Quickly inspecting the structure of an unfamiliar TSV file as readable JSON.
Generating JSON datasets for prototyping front-end interfaces.
Converting TSV configuration files to JSON for use with config parsers.
Validating that a TSV export is well-formed before importing it into another system.

Frequently Asked Questions

Related tools

Csv To Json Json To Tsv Json Format Tsv To Table

Last updated: 2026-05-23 · Reviewed by Nham Vu