Format & Convert

JSON CSV Converter

Convert JSON arrays to CSV and CSV rows to JSON.

Runs in your browser

Input

Output Ready

About JSON CSV Converter

The JSON CSV Converter is for tabular data that needs to move between spreadsheet-style CSV and JSON arrays used by applications and APIs.

Common uses

Turn exported CSV rows into JSON test fixtures.
Create a CSV from a JSON array for spreadsheet review.
Check headers and quoting before importing data into another tool.

Good to know

CSV does not preserve nested objects naturally, so flatten complex data before relying on it for round-trip conversion.

Preparing tabular data

CSV works best when each row has the same fields and each cell is a scalar value. Flatten nested JSON before conversion so the resulting columns are readable in spreadsheet tools and import workflows.

Reviewing the output

Check headers, delimiters, quotes, and line breaks before using the file elsewhere. A value that contains a comma, quote, or newline needs correct escaping to survive a round trip.

Common mistakes

CSV has no universal way to represent nested objects, arrays, dates, or null values. Decide how those values should appear before importing the result into another system.

Before you rely on the output

Use representative samples and validate the result in the target parser or application before replacing production configuration or data files.
Privacy mode: inputs are processed locally in your browser and are not intentionally sent to an application server.