CSV to JSON Converter — Online, Private & Fast
Convert CSV spreadsheets to clean JSON in your browser. Auto-detect delimiters, infer number and boolean types, nest dot-notation headers like address.city, and preview rows in a table — no upload.
Your data never leaves your browser
CSV input
JSON output
No tabular rows to preview.
About this tool
CSV→JSONType inferenceDot headersTable previewPrivate
How to use
- Paste CSV or upload a .csv / .tsv file.
- Choose delimiter, output shape, and type inference options.
- Preview the table, then copy or download JSON.
- Use JSON to CSV for the reverse direction.
Examples
Simple contacts
name,email Alice,alice@example.com
[
{
"name": "Alice",
"email": "alice@example.com"
}
]