CSV to JSON Converter
Convert CSV data into formatted JSON objects or nested array structures.
Drop your CSV file here
or click to browse from your computer
CSV, TSV, XLSX, TXT• Private in-browser processing
Private by Design — Your CSV Stays on Your Device
OnlineCSV processes your files entirely client-side using browser JavaScript. Your CSV contents are never uploaded to any server, database, or remote service.
No account requiredWorks offlineZero data transmission
How to Use CSV to JSON
1
Input CSV
Drag and drop your CSV file or paste CSV text.
2
Choose Formatting
Select between Array of Objects or Array of Arrays, and set pretty or compact output.
3
Copy or Download JSON
Copy the output to your clipboard or download the generated .json file.
Example Transformation
Example CSV Input
id,name,status 101,Acme Corp,Active 102,Beta LLC,Pending
Generated Output
[
{
"id": "101",
"name": "Acme Corp",
"status": "Active"
},
{
"id": "102",
"name": "Beta LLC",
"status": "Pending"
}
]Frequently Asked Questions
How are numbers and booleans handled?
By default, fields are kept as strings to preserve leading zeros and precision, but optional data typing can infer numbers.
Does it handle multiline quoted text?
Yes, full RFC 4180 parsing is applied so multiline CSV values are properly escaped inside JSON strings.