Online JSON to CSV Converter
Paste a JSON array of objects — the tool will automatically find all keys, build column headers, and generate a CSV. Nested objects are serialized to a JSON string.
Frequently asked questions
What JSON format is supported?
The tool expects a JSON array of objects: [{...}, {...}, ...]. All objects may have different keys — all unique keys across the entire array will be used as column headers.
How are nested objects handled?
Nested objects and arrays are converted to a JSON string. If you need a flat structure, normalize the data beforehand (e.g., in SQL via JSON_TABLE or in code using flat-map).
Which delimiter should I choose?
For importing into Excel with a Russian locale — semicolon (;). For Google Sheets — comma (,). For code parsing — any delimiter works, but comma is the most universal. Tab is convenient for pasting directly into spreadsheets.
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