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The JSON to CSV Converter takes a JSON array of objects (or a single object) and produces a delimited CSV file with auto-detected headers from object keys. Useful for data analysts pulling JSON from APIs into Excel, Google Sheets, or pandas. Handles nested objects (flattened with dot notation), arrays (joined with semicolon), null/undefined (empty cell), and configurable delimiters (comma, semicolon, tab).

Formule

CSV = headers + (each row joined by delimiter)

J: JSON Input (text) — JSON document

Guide étape par étape

1Paste JSON array or object
2Choose delimiter (comma, semicolon, tab)
3Calculator validates JSON and outputs CSV with detected columns
4Copy result to clipboard or paste into spreadsheet

Exemples résolus

Entrée

[{"a":1,"b":2},{"a":3,"b":4}]

Résultat

a,b 1,2 3,4

Erreurs courantes à éviter

✕Trailing commas in JSON (invalid)
✕Inconsistent keys across objects

Questions fréquentes

What about nested arrays?

Nested arrays are joined with semicolons within a single cell. For complex nesting, normalize the JSON first.

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