CSV ↔ JSON Converter
Convert between CSV and JSON, both ways
CSV input
JSON output
Quick steps
1
Pick direction
Switch between CSV → JSON and JSON → CSV at the top.
2
Paste your data
Use the sample button to see a realistic example. Auto-detects delimiter for CSV; expects an array of objects for JSON.
3
Copy or download
Result is generated live. Copy to clipboard or download as a file.
Frequently asked questions
How does the CSV parser handle quoted fields with commas?
Quoted fields with embedded commas are kept as a single value. Escaped quotes ("") inside quoted fields are also handled correctly.
What types get inferred from CSV?
With type inference enabled, numbers, booleans (true/false), and null are converted to native JSON types. Everything else stays as a string.
What if my JSON has nested objects?
Nested objects and arrays are serialized as JSON strings inside the CSV cell. CSV cannot represent nesting natively.
Is my data uploaded?
No. Parsing and serialization happen entirely in your browser.