Choose input
Paste a JSON object or array of objects.
JSON to CSV
Convert JSON objects to CSV or TSV using every row’s fields.
Uses every row's fields. Arrays stay JSON; missing values and null become empty cells. Conflicting dotted keys are rejected when flattening.
Last reviewed: · Testing methodology
How to use
Convert one object or an array of objects. Columns include fields from every row. Optional dotted flattening rejects collisions; arrays remain JSON in cells.
Set options
Choose delimiter, headers and flattening, then convert.
Use the result
Inspect all fields and download CSV or TSV.
Examples and checks
Worked example
Use the settings below and inspect the saved result.
- Input
- [{"name":"A"},{"name":"B","later":true}]
- Output
- name,later A, B,true
Limits and questions
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Supported behavior
Convert one object or an array of objects. Columns include fields from every row. Optional dotted flattening rejects collisions; arrays remain JSON in cells.
Limits and review
1 million characters, 10,000 rows and 32 nesting levels. Null and missing values become empty cells. Unsafe numeric integers are rejected; use JSON strings to retain them.
Verification
Review record: 2026-08-26. See the documented behavior and limitations above, and the testing standards for the scope of review.
Testing methodologyWhen to use another workflow
Use a data-frame or ETL tool for nested flattening, type schemas, large datasets, encoding control, and automated exports.
Frequently asked questions
- What are the limits?
- 1 million characters, 10,000 rows and 32 nesting levels.
- What should I check before using the output?
- Null and missing values become empty cells. Unsafe numeric integers are rejected; use JSON strings to retain them.