What this tool does
APIs speak JSON, spreadsheets want CSV. This converter takes an array of objects, collects every key as a column and escapes commas, quotes and line breaks correctly. Nested values stay as compact JSON strings, so no data disappears silently.
How to use it
- Paste a JSON array of objects.
- Choose the delimiter and whether to include a header.
- Copy the CSV or download it as a file.
Questions
What happens to nested objects?
They are serialised as compact JSON inside the cell. Flatten them first if you need separate columns.
Can I convert a single object?
Yes. A single object becomes a one-row CSV; an array of primitives becomes a single value column.