// free-toolJSON → CSV
Paste a JSON array of objects and get CSV with a header row built from the union of all keys — values are quoted and escaped correctly so the file opens cleanly in Excel or Google Sheets. Conversion runs entirely on your device.
no signup · no watermark · unlimited use
An array of objects ([{...}, {...}]). Nested objects are serialized into their cell as JSON; the header row is the union of every key that appears in any row.
No — the conversion is plain JavaScript running in your browser.
Parse CSV (with headers) into clean JSON arrays.
Convert JSON into clean, readable YAML for configs.
Parse YAML (with anchors and multi-docs) into formatted JSON.
Serialize JSON objects into well-formed, indented XML.
Parse XML into JSON, preserving attributes and structure.
Format, minify and validate JSON with precise error locations.
I build fast, privacy-first web applications with Next.js — these converters run entirely in the browser, and yours can too.