JSON to CSV Converter

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Convert a JSON array of objects to CSV, or CSV back to JSON.

100% Client-Side Processing • Your Data Never Leaves Your Browser

About JSON to CSV Converter

Turn a JSON array of flat objects into CSV for spreadsheets, or paste CSV (with a header row) to get it back as a JSON array. Headers are inferred from the union of all object keys; values are quoted and escaped per the CSV spec.

Use it to export API data into Excel/Sheets, or to turn a spreadsheet export back into JSON for a script. Everything runs locally in your browser.

Key Features

JSON array of objects → CSV with inferred headers

CSV → JSON with quoted-field and type coercion support

Handles commas, quotes, and newlines inside cells

Frequently Asked Questions

What happens with nested objects or arrays in a cell?

Nested values are serialized as a JSON string inside that CSV cell so no data is lost.