CSV to JSON
Free online CSV to JSON converter. Convert CSV data to JSON instantly. Supports custom delimiters. All processing is local.
How to Use CSV to JSON
Paste CSV Data
Paste your CSV data into the input panel. The first row is treated as headers. Common delimiters are comma (,), tab, and semicolon (;).
Convert to JSON
Click "CSV to JSON" to convert. Each row becomes a JSON object with keys from the header row.
Copy the Result
The JSON output appears in the right panel. All processing happens locally.
Example
CSV
name,age,city
John,30,New York
Jane,25,LondonJSON
[
{"name":"John","age":"30","city":"New York"},
{"name":"Jane","age":"25","city":"London"}
]Frequently Asked Questions
What CSV formats are supported?
This tool supports comma-separated, tab-separated, and semicolon-separated CSV files. The first row is used as column headers. Values containing the delimiter or quotes should be properly quoted.
Can I convert JSON back to CSV?
This tool converts CSV to JSON. For the reverse conversion, you can use a JSON to CSV converter. The process is straightforward: JSON array of objects → CSV with headers from object keys.
What happens if my CSV has empty cells?
Empty cells are converted to empty strings in the JSON output. Null values are not supported by CSV natively — you would need to handle them in post-processing.