JSON → CSV Converter
Paste a JSON array of objects, get a clean CSV with keys auto-detected as columns.
About this tool
Browser-side JSON to CSV converter. Accepts an array of flat objects or a nested object you can choose the root key from. Flattens 1-level nested fields with dot notation. Useful for API exports, BigQuery prep, and feeding spreadsheet-shaped data into tools that don't take JSON.
How nested fields are handled
One-level nested objects are flattened with dot notation. So { user: { name: "Alex" } }
becomes a column called user.name.
Arrays inside fields are JSON-stringified so you don't lose data. If your
JSON is deeply nested, flatten it first or pick a sub-key via the root
key field.
Common uses
- • API export → spreadsheet for stakeholders
- • Webhook payload sample → CSV for BigQuery / Snowflake / Looker import
- • Quick JSON inspection in Excel where filtering and pivoting are easier
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