JSON to CSV Converter Online Free
The free JSON to CSV Converter transforms JSON arrays into comma-separated spreadsheet rows instantly in your browser. Each object key becomes a column header, and each array item becomes a row. No server, no upload, no signup.
How to Convert JSON to CSV
- Open the JSON to CSV Converter.
- Paste a JSON array into the input panel.
- The CSV output appears instantly in the right panel.
- Click Copy to copy the CSV, or Download to save as a
.csvfile.
The input must be a JSON array of objects where every object shares the same keys. The first object's keys are used to generate the header row.
JSON Structure to CSV Mapping
| JSON Input | CSV Output |
|---|---|
| Array of objects | Header row + one data row per object |
| Object key | Column header |
| String value | Quoted cell if it contains commas or newlines |
| Number value | Unquoted numeric cell |
| null value | Empty cell |
| Nested object | Stringified JSON in a single cell |
Use Cases
Exporting API data to a spreadsheet
REST APIs often return arrays of records in JSON format. If you need to view, filter, or share the data in Excel or Google Sheets, converting to CSV is the fastest route. Paste the JSON array, download the CSV, and open it directly in your spreadsheet app.
Database report generation
Many databases and ORMs can return results as JSON arrays. If your reporting pipeline needs CSV output for a non-technical stakeholder, converting at this stage avoids extra backend code.
Data migration
Moving data between systems often requires transforming the format. JSON is common in modern APIs; CSV is required by many legacy import tools, email marketing platforms, and CRM systems.
Handling Nested JSON
CSV is a flat format — it cannot directly represent nested structures. When a JSON object has a nested object or array as a value, the converter serializes that value as a JSON string in a single cell. If you need flat columns instead, manually flatten the JSON before converting by restructuring the array so nested keys become top-level keys.
To go in the reverse direction, use the CSV to JSON Converter.
Convert JSON to CSV Free Online
Instant spreadsheet-ready rows from any JSON array. No uploads, no account.
Open JSON to CSV Converter