About JSON to CSV Converter
This tool converts JSON arrays of objects into CSV (Comma Separated Values) format. CSV is widely used for data export and can be opened in spreadsheet applications like Excel or Google Sheets. The converter automatically extracts all unique keys from your objects as CSV headers and handles nested values.
What is JSON to CSV Converter?
JSON to CSV conversion transforms structured JSON data into tabular CSV format. CSV files open in Excel, Google Sheets, and data analysis tools. JSON arrays of objects become rows, object keys become column headers. This enables data export, reporting, and analysis workflows that bridge modern APIs with traditional spreadsheet tools.
How to Use
- Paste JSON array of objects into input
- Select delimiter: comma (standard), semicolon, or tab
- Click 'Convert to CSV'
- Copy CSV output or download as .csv file
- Open in Excel/Sheets or import to analysis tools
Why Use This Tool?
Tips & Best Practices
- Input must be array of objects [{...}, {...}]
- Comma delimiter is standard CSV
- Semicolon works for European Excel versions
- Tab delimiter for TSV format
- Nested objects become JSON strings in cells
- Missing keys create empty cells in output
Frequently Asked Questions
What JSON format is required?
Array of objects: [{"name": "John", "age": 30}, {...}]. Each object becomes a row. Keys become column headers. Single object wraps to one-row array. Non-array JSON causes errors. All objects should have similar keys for best results.
Why different delimiters?
Comma is standard CSV for most systems. Semicolon is needed in European regions where comma is decimal separator. Tab creates TSV (Tab-Separated Values) for systems that prefer tabs. Choose based on your target application.
How are headers determined?
Headers are all unique keys from all objects. If objects have different keys, all keys appear as columns. Missing keys in some objects result in empty cells. This ensures complete data representation.
What happens to nested objects?
Nested objects (like {"user": {"name": "John"}}) become JSON strings in cells: "{\"name\":\"John\"}". Arrays become stringified. For flat CSV, flatten nested data before conversion, or accept JSON strings as cell values.
Can I handle large JSON files?
This browser-based tool works for moderate sizes (thousands of rows). For very large datasets, use server-side processing or specialized tools. Browser memory limits may affect very large JSON arrays.
How do I import CSV to Excel?
Open Excel, File > Open, select CSV file. Excel auto-detects columns. For semicolon CSVs in European Excel, use Data > From Text/CSV, specify delimiter. Google Sheets: File > Import, upload CSV, select delimiter.