Does nested JSON work?

Nested objects are flattened where possible; deeply nested structures may need cleanup first.

Yes. Convert JSON to CSV online free.

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JSON to CSV Converter

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JSON

Array of objects — nested keys become dotted columns

[
  {
    "name": "Ada Lovelace",
    "role": "Engineer",
    "profile": { "city": "London", "active": true }
  },
  {
    "name": "Grace Hopper",
    "role": "Admiral",
    "profile": { "city": "New York", "active": true }
  },
  {
    "name": "Alan Turing",
    "role": "Mathematician",
    "profile": { "city": "Manchester", "active": false },
    "tags": ["crypto", "computing"]
  }
]

3 rows · 5 columns

CSV

Spreadsheet-ready output

name,role,profile.city,profile.active,tags
Ada Lovelace,Engineer,London,true,
Grace Hopper,Admiral,New York,true,
Alan Turing,Mathematician,Manchester,false,crypto; computing

name	role	profile.city	profile.active	tags
Ada Lovelace	Engineer	London	true
Grace Hopper	Admiral	New York	true
Alan Turing	Mathematician	Manchester	false	crypto; computing

174 chars