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JSON to CSV
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Convert JSON to CSV online
This JSON to CSV converter takes an array of JSON objects and turns it into a spreadsheet-ready CSV file. It collects every key across all rows to build the header, optionallyflattens nested objects into dot-notation columns (address.city), escapes values correctly per RFC 4180, and lets you download the result as a .csv you can open directly in Excel, Google Sheets or Numbers.
When do you need JSON to CSV?
- Reporting - export API data into a spreadsheet for analysts and stakeholders.
- Data migration - many databases and CRMs import CSV but not JSON.
- Quick analysis - pivot tables and charts are one paste away once data is tabular.
Handling nested JSON
CSV is flat; JSON often isn't. With flattening enabled, a nested object like{"user": {"name": "Ada"}} becomes a user.name column. Arrays inside rows are serialized as JSON strings so no data is lost. If your objects have inconsistent keys, missing values simply become empty cells - every row always lines up with the full header.
Your data never leaves the browser: parsing, flattening and file generation all happen locally in JavaScript. Validate your input first with the JSON validator if the conversion reports a syntax error.