CSV to JSON Converter
Convert between CSV and JSON formats.
How to Use
Paste CSV data into the input panel to convert it to a JSON array of objects, where each row becomes an object with column headers as keys. You can also paste JSON array data to convert it back to CSV format. The tool auto-detects delimiters (comma, tab, semicolon) and handles quoted fields correctly.
Common Use Cases
- Converting exported spreadsheet data to JSON for use in web applications
- Transforming API JSON responses to CSV for analysis in Excel or Google Sheets
- Preparing CSV data for import into a NoSQL database that accepts JSON
- Converting tabular test data between formats for automated testing frameworks
Frequently Asked Questions
How does the tool handle CSV fields that contain commas?
Fields containing commas, newlines, or double quotes should be enclosed in double quotes per the RFC 4180 standard. The tool correctly parses quoted fields and handles escaped quotes (double double-quotes).
What happens if rows have different numbers of columns?
The tool uses the header row to determine the number of fields. Extra fields in subsequent rows are ignored, and missing fields are set to empty strings or null in the JSON output.
Can I specify a custom delimiter?
The tool auto-detects common delimiters including comma, tab, and semicolon. If your data uses an unusual delimiter, you may need to preprocess it to use a standard delimiter.