TSV to JSON Converter
Paste from Excel or Upload TSV Files

Convert TSV files to JSON format instantly in your browser. Paste from Excel or Google Sheets for instant conversion.

Drag & drop your file here, or browse

Accepts: .tsv (up to 100 MB)

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

How to Convert TSV to JSON

Drag and drop your TSV file, or switch to the "Paste Text" tab and paste tab-separated data from Excel or Google Sheets.

Conversion starts automatically and a preview is displayed.

Click the "Download JSON" 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.
Paste from Spreadsheets: Copy cells from Excel or Google Sheets and paste directly. The clipboard data is tab-separated, so this tool converts it to JSON instantly.
Streaming for Large Files: Files over 150MB are processed in streaming mode, writing directly to disk without consuming excess browser memory.

TSV vs JSON: Key Differences

TSV (Tab-Separated Values) is a flat tabular format, while JSON (JavaScript Object Notation) represents data as key-value pairs with support for nested structures.

Feature	TSV	JSON
Structure	Flat tabular	Nested key-value
Data Types	All strings	String, Number, Boolean, Null
Use Case	Spreadsheet exports	APIs, Web applications
File Extension	.tsv	.json

Benefits of Converting TSV to JSON

JSON preserves data types (numbers, booleans) instead of treating everything as strings.
JSON is the standard format for web APIs and modern applications.
JSON supports nested structures for complex data relationships.

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.