Converting JSON to CSV makes data accessible in spreadsheet applications like Excel, Google Sheets, and database import tools. Our free JSON to CSV converter handles nested objects (flattened with dot notation), supports custom delimiters, and runs entirely in your browser.
For CSV to JSON conversion, paste your CSV data and click CSV → JSON. The tool automatically detects numbers and booleans, producing clean typed JSON output. Toggle the "First row is header" option to match your CSV format.
Paste your data into the input box above, or drag and drop a file. Click the convert button to process. All operations run 100% in your browser with no data sent to any server.
Nested objects are flattened using dot notation: {"user":{"name":"Alice"}} becomes a column "user.name" with value "Alice". Arrays are converted to their JSON string representation.
Comma (,), semicolon (;), tab, and pipe (|). Choose the delimiter that matches your target application. CSV-to-JSON conversion auto-detects the delimiter.