CSV ↔ JSON Converter

Bi-directionally convert data formats. Parse CSV spreadsheet data into structured JSON arrays, or convert JSON array objects back into clean CSV sheets.

Input DataEnter your comma-separated CSV values or JSON array text

About CSV & JSON Conversion

CSV (Comma-Separated Values) and JSON (JavaScript Object Notation) represent different data modeling paradigms. CSV is a highly compact, tabular format optimized for spreadsheets (like Excel), databases, and rows matching. JSON is a nested, hierarchical structure designed for web APIs, configurations, and complex object graphs.

Conversion details:

CSV to JSON: The converter reads the header line as column properties, mapping subsequent rows to individual array objects. Automatic type detection casts numeric strings and booleans.
JSON to CSV: The converter flattens object arrays, extracting keys as header columns, and prints row strings. Nested arrays are stringified to preserve spreadsheet integrity.