CSV ↔ JSON Converter
Convert CSV to JSON and JSON to CSV online for free. Transform data between CSV and JSON formats with our fast and easy-to-use converter
Examples
CSV to JSON FAQ and Usage Guide
What is CSV?
CSV (Comma-Separated Values) is a data format with comma-separated values. It's widely used in spreadsheet programs (Excel, Google Sheets). The first line is usually used as the header (column names).
Why convert CSV to JSON?
Common use cases:
- For use in web APIs (most APIs use JSON format)
- Processing data in JavaScript applications
- Storing in NoSQL databases
- Representing more complex data structures (nested objects, etc.)
Why convert JSON to CSV?
Common use cases:
- To open in Excel or Google Sheets
- For use in data analysis tools (R, Python pandas, etc.)
- Viewing data in an easy-to-read table format
- Format required by legacy systems
What is a delimiter?
A delimiter is the character used to separate values in a CSV file. Comma (,) is commonly used, but tab (\t), semicolon (;), and pipe (|) are also used. You can choose a different delimiter if your data contains many commas.
What if values contain the delimiter?
This tool automatically wraps values in quotes ("") if they contain the delimiter. For example, if an address contains a comma, it's handled as "Seoul, Korea".
What are the JSON format requirements?
For JSON → CSV conversion, the JSON must be an array of objects.
Example: [{"name":"John","age":30}, {"name":"Alice","age":25}]
The keys from the first object are used as CSV headers.
Is my data safe?
Yes! All processing happens only in your browser. Your data is never sent to any server and is not stored anywhere.