Free CSV to JSON Converter Online
Convert CSV to JSON online for APIs, configs, and test data—paste CSV with headers, copy clean JSON. Private, instant, no signup. Need the reverse? Use the JSON to CSV converter.
Output
Convert CSV to JSON online for APIs, configs, and test data—paste CSV with headers, copy clean JSON. Private, instant, no signup. Need the reverse? Use the JSON to CSV converter.
Processes input in your browser | Privacy policy
This free online CSV to JSON converter turns spreadsheet CSV into structured JSON for API payloads, seed data, and scripts. Conversion runs in your browser—no signup required. Need the reverse direction? Use our JSON to CSV converter online. For examples and best practices, see the CSV to JSON guide.
name,age,city
Alice,30,NYC
Bob,25,LA
→
[
{"name": "Alice", "age": "30", "city": "NYC"},
{"name": "Bob", "age": "25", "city": "LA"}
]Expects comma-separated values with a header row. Quoted fields, custom delimiters, and very large files may not convert perfectly. Always validate output before production use.
This tool processes input in your browser. Do not paste passwords, private keys, or highly sensitive data unless you understand how the tool works. See our privacy policy.
Last updated: August 26, 2026