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JSON to CSV Converter
Convert a JSON array of flat objects into CSV.
An API gave you JSON and the thing you have to upload it into wants a CSV. This takes a JSON array of objects and lines the keys up into columns, including keys that only some of the objects have — those become empty cells rather than shifting everything after them out of line.
How JSON to CSV Converter works
- Enter or paste your text or values.
- It's processed instantly on your device as you type.
- Copy or download the result.
Good to know: Flat objects only. A value that is itself an object or an array has no CSV representation and comes through as text like [object Object] — flatten those into their own keys first (for example address.city rather than a nested address).
Common questions
What if my objects do not all have the same keys?
Every key seen anywhere in the array becomes a column, in the order first encountered, and objects missing that key get an empty cell. Nothing is dropped and no row shifts.
Does it accept a single object rather than an array?
No — it needs a non-empty JSON array, because a CSV is a table of rows. Wrap a lone object in square brackets and it converts as a one-row table.