CSV to JSON Converter
Convert between CSV and JSON formats instantly. Auto-detects delimiters, handles quoted fields, and formats output beautifully.
Frequently Asked Questions
What formats does this converter support?
This tool converts CSV (Comma-Separated Values) to JSON arrays of objects, and JSON arrays back to CSV. It auto-detects common delimiters including commas, semicolons, and tabs. You can also specify a custom delimiter.
How are CSV headers handled?
By default, the first row of CSV data is treated as column headers. These become the keys in the resulting JSON objects. You can toggle the 'First row is header' option off to use auto-generated column names (col1, col2, etc.) instead.
Can it handle quoted fields and special characters?
Yes. The parser correctly handles quoted fields containing commas, newlines, and escaped quotes (double-quote within quotes). This follows the RFC 4180 CSV standard for proper field escaping.
What happens with malformed data?
The converter validates input and shows clear error messages for common issues like invalid JSON, mismatched columns, or empty input. It handles edge cases like trailing newlines, empty fields, and inconsistent row lengths gracefully.
Is my data sent to a server?
No. All conversion happens entirely in your browser using JavaScript. Your data never leaves your device, making it safe to use with sensitive or proprietary information.