JSON ↔ CSV Converter

Convert an array of JSON objects to CSV, or a CSV table to JSON. Works entirely in your browser.

Delimiter:

Input

Output

JSON and CSV Converter guide

The JSON / CSV Converter changes structured data between JSON and comma-separated values. It is useful when data needs to move between APIs, spreadsheets, database exports, reports and small automation scripts.

JSON supports nested objects and arrays, while CSV is a flat table. The converter can help flatten simple structures, but complex data may need manual cleanup so columns remain meaningful.

When to use it

Turning an API response into a spreadsheet-friendly CSV.
Converting a small CSV table into JSON for tests or mock data.
Checking headers and delimiters before importing data elsewhere.
Creating examples for documentation or support tickets.

How to use it

Paste JSON or CSV into the input area.
Choose the conversion direction.
Set delimiter or header options if the tool provides them.
Review the output for nested values, quotes and empty cells.
Copy or download the result and test it in the destination app.

Example

Input

[{"name":"Ada","role":"Developer"},{"name":"Niels","role":"Designer"}]

Output

name,role
Ada,Developer
Niels,Designer

Each object becomes a row and object keys become CSV headers.

Privacy

Conversion runs locally in your browser. UtilityTools.eu does not upload your dataset.

Limitations and accuracy notes

Nested JSON may be flattened or represented in a simplified way.
CSV files with unusual delimiters, encodings or multiline fields can need cleanup.
Large datasets may exceed browser memory or make the page slow.

FAQ

Can CSV represent nested JSON?

Not directly. Nested values must be flattened, stringified or split into separate tables.

Why are quotes doubled in CSV?

CSV escapes quotes inside quoted fields by doubling them.

Is this suitable for confidential customer exports?

The conversion is local, but you should still follow your organization’s data-handling rules.

JSON ↔ CSV Converter

JSON and CSV Converter guide

When to use it

How to use it

Example

Input

Output

Privacy

Limitations and accuracy notes

FAQ

Can CSV represent nested JSON?

Why are quotes doubled in CSV?

Is this suitable for confidential customer exports?

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