CSV to JSON Converter
Convert CSV files to JSON entirely in your browser. Nothing is uploaded to a server — the file is processed and downloaded on your device. JSON is a structured text format that supports nesting and arrays.
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Drop a CSV file, or click to browse
Frequently asked questions
How do I convert CSV to JSON?
Choose your CSV file above and click "Convert to JSON." The conversion runs entirely in your browser — JSON is a structured text format that supports nesting and arrays — and the result downloads straight to your device.
Is this free, and is my file uploaded anywhere?
Yes, this tool is completely free with no signup. Your file never leaves your device — the conversion happens locally in your browser, not on a server.
What's the difference between CSV and JSON?
CSV is a plain-text tabular format using commas to separate values. JSON is a structured text format that supports nesting and arrays.