Convert CSV or Excel data to JSON format instantly. Paste data or upload a file.
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This tool converts CSV (Comma-Separated Values) data into JSON format. Simply paste your CSV data or upload a file, and get properly formatted JSON instantly. Perfect for:
We support standard CSV with comma, semicolon, tab, or pipe delimiters. The first row is treated as headers by default. You can also paste data directly from Excel.
Numbers are automatically converted to JSON numbers, "true"/"false" become booleans, and empty values become null. You can disable this to keep everything as strings.
Currently we support CSV format. To convert Excel, save your spreadsheet as CSV first (File > Save As > CSV), then upload or paste the content here.
Yes! All conversion happens locally in your browser. Your data never leaves your device or gets uploaded to any server.