JSON ↔ CSV Converter
Turn JSON arrays into CSV, and back.
CSV
Nested objects and arrays land in a CSV cell as JSON text. CSV → JSON guesses numbers and booleans from the cell text. Everything is parsed locally with Papa Parse.
About this tool
Convert a JSON array of objects to CSV with proper quoting, or parse CSV with headers back to typed JSON — locally with Papa Parse, nothing uploaded.
It runs completely in your browser — no input is sent anywhere, and this page loads no ads or third-party scripts, so it is safe to use with data you would not paste into a hosted service.