CSV to JSON
Convert CSV data to JSON format.
Three steps to done
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Runs in your browser, nothing uploaded
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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.
Frequently Asked Questions
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