JSON to CSV Converter Online
Paste JSON and turn arrays, API responses, or nested objects into spreadsheet-ready CSV without uploading data. The converter flattens nested keys, detects columns automatically, escapes commas and quotes, and creates a downloadable CSV for Excel, Google Sheets, Airtable, databases, and reporting workflows.
Convert JSON to CSV
CSV output
When to use a JSON to CSV converter
Use this browser converter when you need to export API results, analytics events, product feeds, configuration files, logs, or copied JSON into a tabular format. It is especially useful for arrays of objects where each key should become a CSV column.
JSON conversion checklist
For the cleanest spreadsheet output, start with valid JSON, keep repeated records in an array, use consistent key names, and check nested object fields after conversion. Nested properties are flattened with dot notation, which makes them easier to filter and map in spreadsheets or data import tools.
Private local processing
The conversion runs in your browser, so sample API payloads, customer exports, and internal data are not sent to a server. For highly sensitive datasets, still follow your company policy before pasting data into any browser-based tool.
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FAQ
What JSON formats work?
Arrays of objects work best because each object becomes one CSV row. A single object is converted as one row, and simple arrays can still be exported.
Are nested objects supported?
Yes. Nested keys are flattened with dot notation such as user.name, so the CSV keeps a readable column name for each nested field.
Will the CSV open in Excel or Google Sheets?
Yes. The output escapes commas, quotes, and line breaks so it can be downloaded and opened in spreadsheet tools.
Is this safe for private data?
The conversion runs in the browser and does not upload your JSON, which is helpful for internal API responses or private exports.