Free browser utility
CSV to JSON Converter
The first row is used as object keys. Empty or duplicate headers are normalized automatically.
✓ Local processing✓ No registration✓ No file upload
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Before
name,age\nAna,30
→
After
[{"name":"Ana","age":"30"}]How to use CSV to JSON Converter
- Paste text or select local files in the tool area.
- Choose any options that match the source data.
- Run the conversion or repair and review the preview.
- Copy the result or download the generated file.
Privacy and local processing
This project performs processing, document generation or calculations in your browser. The page does not include an upload endpoint, analytics script or remote processing API call. Avoid pasting sensitive data into websites you do not control.
Frequently asked questions
Does it support semicolon-separated files?
Yes. Choose comma, semicolon, tab or pipe as the delimiter.
Does it infer numbers and booleans?
You can enable basic type inference for numbers, booleans and null values.