CSV to JSON Converter

Convert CSV files, Excel spreadsheets, and tabular data into clean, formatted JSON arrays. 100% private, runs in your browser with zero uploads.

100% Client-Side · In-Memory Only

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How to Use CSV ⇄ JSON

Select conversion mode: CSV → JSON or JSON → CSV.
Paste your data into the editor.
Configure custom delimiter options (comma, semicolon, tab).
Click "Convert" and download the resulting file.

Features & Guarantees

Parses CSV with quoted multi-line fields and embedded commas.
Automatic type inference (booleans, numbers, nulls).
Flattens JSON arrays into tabular CSV rows.

Frequently Asked Questions

Does it handle commas inside quoted spreadsheet cells?

Yes. The parser strictly respects RFC 4180 rules for escaped quotes and commas.