Free · No signup · Files deleted after 1h

JSON to CSV
Converter

Flatten a JSON array of records into a CSV that opens straight in Excel, Google Sheets or any BI tool.

Convert JSON to CSV free →

No account needed · Up to 25 MB free · Files permanently deleted after 1 hour

API output → spreadsheet
Exports and API responses arrive as JSON; spreadsheets don't read it. One conversion later, the data is filterable, sortable and chartable.
Sensible flattening
Column headers come from the union of keys across rows. Nested objects and arrays are kept as compact JSON strings — nothing is silently discarded.
Private & secure
Uploaded over HTTPS, processed on EU servers, never shared with third parties, and permanently deleted after 1 hour. Never used to train AI.

How it works

1
Upload your JSON
An array of objects is ideal ([{...}, {...}]); an array of arrays or a single object also works.
2
CSV is preselected
Or choose XLSX to get a real Excel workbook instead.
3
Download the CSV
UTF-8, comma-delimited, Excel-safe quoting.

Common questions

What JSON shapes are supported?

An array of flat objects is the sweet spot. Arrays of arrays convert as a plain grid. Deeply nested structures convert too — nested values are embedded as JSON strings you can post-process.

How are missing keys handled?

The header row is the union of all keys seen; rows without a given key get an empty cell — the standard CSV convention.

Is a huge JSON file OK?

JSON inputs are capped at 50 MB and 1 million rows — far beyond what a spreadsheet will comfortably open anyway. For bigger data, talk to us about the API.

Is there a file size limit?

Free users can convert files up to 25 MB without an account. Pro raises that to 500 MB per file with 3,000 credits a month; Business goes to 5 GB.

Related converters
CSV → Excel Excel → JSON Excel → CSV Repair CSV