CSV to JSON Converter

Convert CSV to JSON online, with correct handling of quoted fields and commas. Free CSV to JSON converter for developers — runs in your browser.

CSV input

Enter URL to fetch CSV data

JSON output

About the CSV to JSON Converter

Turn spreadsheet-style CSV into a JSON array of objects, using the first row as keys. The parser follows RFC 4180 — it handles quoted fields, commas inside quotes, escaped quotes (""), and line breaks within fields. Everything runs in your browser — nothing is uploaded.

Common use cases

Seeding apps: load spreadsheet exports as JSON.
APIs: reshape CSV data for endpoints that expect JSON.
Analysis: move tabular data into JSON-based tooling.

How it works

Paste CSV, upload a .csv file, or fetch it from a URL.
Click Convert.
Copy the JSON or save it as a file.

Frequently asked questions

How are quoted fields handled?

Commas and newlines inside double quotes are preserved, and a doubled quote ("") becomes a single literal quote — per the RFC 4180 standard.

Is my data uploaded?

No. Conversion happens locally in your browser — your data never leaves your device.