Convert CSV files to JSON or JSON arrays to CSV. Load from file or paste directly.
Always verify your converted data
Automated conversion is not perfect. Special characters, numbers stored as text, date formats, multi-line fields, and nested structures may not convert exactly as expected. Always review the output manually before using it in production or sharing it with others.
Number detection
Numbers and booleans are automatically detected and typed correctly. Disable this if your IDs look like numbers but should stay as strings.
Nested objects
When converting JSON→CSV, nested objects are serialized as JSON strings since CSV doesn't support nesting.
Headers required
CSV→JSON requires the first row to be column headers. Files without headers may produce unexpected results.
Always verify
Check your output for missing fields, wrong types, encoding issues, or mangled special characters before using it.