JSON to CSV Converter
JSON to CSV Converter turns a JSON array of objects into CSV and parses CSV back into JSON. Paste your data and click JSON to CSV or CSV to JSON to convert it instantly. All processing happens locally in your browser, and nothing is sent to a server.
About JSON and CSV
JSON is a flexible, nested data format, while CSV is a flat table of rows and columns. This tool flattens a JSON array of objects into CSV using the union of all keys as the header, and parses CSV (including quoted fields and embedded commas) back into a JSON array.
Turning JSON into CSV is a daily task in data analysis and reporting: APIs return JSON, but Excel, Google Sheets and most BI tools prefer CSV. The reverse, CSV to JSON, helps when importing exported spreadsheet data into an application, a NoSQL database or a JavaScript front end.
Converting to CSV, the tool gathers every key across all objects so no column is lost and quotes any value containing commas, quotes or line breaks. Parsing CSV, it understands quoted fields and embedded delimiters and returns a clean, indented JSON array you can paste straight into your code.
Frequently Asked Questions
How does it handle commas and quotes inside values?
When building CSV, any value containing a comma, quote or line break is wrapped in quotes and escaped, and the parser understands those quoted fields when converting back.
Does JSON to CSV keep every field?
Yes. It collects the union of keys across all objects, so even if some records have extra fields, no column is dropped from the CSV output.
Is my data uploaded anywhere?
No. The conversion runs entirely in your browser, so your JSON and CSV data never leave your device.