INPUT - CSV
OUTPUT - CSV → JSON
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100% client-side
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Convert CSV data to JSON arrays online with our free CSV to JSON converter. The tool auto-detects delimiters, uses header rows as JSON keys, and infers numeric and boolean types from cell values. Perfect for transforming spreadsheet exports, database dumps, and tabular data into JSON for APIs and web applications.
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Enter CSV text with a header row in the left editor. The converter auto-detects comma, semicolon, and tab delimiters.
The output shows a JSON array where each CSV row is an object with header names as keys. Numeric values are auto-typed.
Copy the JSON to your clipboard or download it as a .json file for use in APIs, databases, or JavaScript applications.
Yes. The first row of your CSV is treated as the header row, and each subsequent row becomes a JSON object with keys matching the header values. Make sure your CSV has a header row for meaningful output.
Yes. The converter auto-detects commas, semicolons, tabs, and pipe characters as delimiters. It examines the first few lines to determine which delimiter is most likely and applies it consistently.
Yes. Cell values that look like numbers (integers and decimals) are output as JSON numbers, not strings. Values like "42" become 42, and "3.14" becomes 3.14. Quoted numbers remain as strings if explicitly quoted in the CSV.
Fields containing commas must be enclosed in double quotes per the CSV standard. The converter correctly parses quoted fields and preserves the commas within the resulting JSON string value.
Yes. Save your Excel spreadsheet as CSV (comma-delimited) and paste the contents here. The converter handles the standard CSV format that Excel produces, including quoted fields and Unicode characters.