JSON → CSV

Turn an array of objects into a CSV table.

Private by design. Your input never leaves this browser. Conversions run locally on your device.

What this tool handles

Columns are the union of every key across all records, in first-seen order.
Records missing a key get an empty cell rather than a shifted row.
Nested objects and arrays are written as JSON text inside a single cell.
The delimiter can be a comma, semicolon, tab or pipe, and the header row can be switched off.
Output always uses "\n" line endings.

[{"id":1,"name":"Ada"},{"id":2,"name":"Linus","role":"maintainer"}]

id,name,role
1,Ada,
2,Linus,maintainer

CSV → JSON — Parse CSV or TSV into JSON, with delimiter detection and optional type coercion.
Convert any format — Pick an input format and an output format and convert between any pair.
JSON → YAML — Convert JSON to readable YAML with configurable indentation.
YAML → JSON — Parse YAML and emit pretty-printed JSON.
JSON → TOML — Convert a JSON object to TOML.
TOML → JSON — Parse TOML configuration into JSON.