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Key Features
Instant Calculation
Get accurate results in real time with our optimized algorithm.
Mobile Friendly
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100% Free
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JSON is great for APIs, but spreadsheets and many data tools expect CSV — this tool converts a JSON array of objects into a proper CSV file in one step.
This tool converts a JSON array of objects into CSV, using the first object's keys as column headers.
How it works
Paste a JSON array of objects (all sharing the same set of keys). The tool uses the first object's keys as column headers, then writes one CSV row per object, placing each value under its matching column — any nested value is encoded as a JSON string.
- Enter jSON array of objects.
- Click Calculate to see your results.
Examples
Converting two records
[{"name": "Alice", "age": 30}, {"name": "Bob", "age": 25}] converts to a 3-line CSV: a header row, then one row per person.
Who should use it
- Turning an API response into a spreadsheet-friendly file.
- Preparing JSON data for import into a tool that only accepts CSV.
Industry applications
- Data analysis and reporting
- Software development and API integration
Advantages
- Automatically uses the first object's keys as headers — no manual mapping needed.
- Handles nested values gracefully by encoding them as JSON strings.
Limitations
- Doesn't flatten nested objects into separate columns automatically.
Common mistakes to avoid
- Pasting a single JSON object instead of an array of objects — this tool expects an array, like [{...}, {...}].
- Expecting deeply nested data to spread across multiple columns automatically — nested values are flattened into a single JSON-string cell instead.
Best practices
- For the cleanest CSV output, make sure every object in your array shares the same set of keys before converting.
Tips
- If you need nested fields as their own columns, flatten your JSON structure first (for example, turning {"address": {"city": "..."}} into a top-level "address_city" key) before converting.