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CSV to JSON

Convert CSV data to JSON format.

Your files never leave your device

When to use this

API data preparation

Convert spreadsheet exports to JSON arrays for REST API payloads.

Data migration

Transform CSV database exports into JSON for NoSQL imports.

Frontend prototyping

Turn sample CSV data into JSON fixtures for UI development.

Free CSV to JSON converter

Paste your CSV data and get a formatted JSON array in one click. Works with comma, semicolon, and tab delimiters. Use the header row toggle to control whether the first row becomes object keys or data.

The output is a JSON array of objects, which is the standard format expected by REST APIs, data visualization libraries, and most JavaScript applications. Download the result as a .json file or copy it to your clipboard.

Everything runs in your browser. Config files, spreadsheet exports, or any sensitive CSV data never leaves your machine.

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