CSV ↔ JSON
CSV to JSON Converter (and vice versa)
Convert data between CSV and JSON formats. Bidirectional conversion with automatic column detection.
CSV Input
Privacy: Processing happens in your browser. Files and text are not uploaded to Anwita Digital servers.
How to use this tool
- Choose conversion direction: CSV to JSON or JSON to CSV
- Paste or upload CSV/JSON data
- For CSV: tool detects headers and maps to JSON keys
- For JSON: specify which fields become CSV columns
- Preview converted result
- Download or copy converted data
- Use for data migration, API integration, or format transformation
About CSV ↔ JSON
CSV (Comma-Separated Values) and JSON (JavaScript Object Notation) are common data interchange formats. CSV is tabular, simple, spreadsheet-compatible. JSON is hierarchical, web-native, API-friendly. This converter translates between them.
CSV-to-JSON converts rows to objects, using headers as keys. JSON-to-CSV flattens objects to rows, extracting specified fields. Handles nested JSON with options for flattening or keeping nested structures.
All conversion happens locally. No data is uploaded, safe for customer lists, financial records, personal information, or proprietary datasets.
Frequently asked questions
Yes, with options. Nested objects can be flattened (dot notation: user.address.city) or kept as JSON strings in CSV cells. Deep nesting may require manual cleanup depending on your target use case.
Most converters support common delimiters: comma, semicolon, tab. Specify delimiter if your CSV uses non-standard separators. Auto-detection works for common formats.
CSV is text-based, all values are strings. JSON preserves types (numbers, booleans, nulls). CSV-to-JSON can infer types (numbers, booleans). JSON-to-CSV converts everything to strings. Type information may require manual restoration.