CSV ↔ JSON Converter is a Pro tool
Unlock this tool and all Pro features for just $5/month.
Upgrade to ProCancel anytime · All 15 free tools stay free forever
How to Use This Tool
Paste CSV data
Enter or paste your CSV content with headers in the first row.
Convert
The tool parses headers and rows into structured JSON.
Copy JSON output
Copy the resulting JSON array of objects.
Features
Bidirectional
Convert CSV to JSON or JSON to CSV in either direction.
Auto Header Detection
Automatically uses the first row as JSON keys.
Instant Parsing
Large CSV files are parsed and converted in real time.
One-Click Copy
Copy converted output to your clipboard.
Frequently Asked Questions
How does CSV to JSON conversion work?
The first row of the CSV is treated as column headers, which become the JSON object keys. Each subsequent row becomes a JSON object with values mapped to the corresponding header keys, and all rows are collected into a JSON array.
What delimiter does this tool support?
The tool auto-detects commas, semicolons, and tab characters as delimiters. Commas are the default.
Are quoted fields handled correctly?
Yes. Fields enclosed in double quotes are handled per the RFC 4180 standard, including fields containing commas, newlines, and escaped quotes.
What happens with missing values?
Missing values in CSV rows are converted to null values in the JSON output. Extra columns beyond the header count are ignored.