CSV to JSON
Convert CSV rows into an array of JSON objects.
How to use CSV to JSON
Convert CSV rows into an array of JSON objects.
The first CSV row is used for field names. All CSV values are strings because the file does not describe column types.
- Open CSV to JSON on Tools4U.
- Paste content, or import a supported text file.
- Select Convert and review the output.
- Copy the result or download the converted file.
Frequently asked questions
Is CSV to JSON free?
Yes. Verified Tools4U accounts can use the converter for free. Premium members do not see advertisements.
Are my files stored?
The text is processed on a private worker and returned directly without saving generated files to disk. Do not upload sensitive information without permission.
What is the input limit?
600,000 characters, with a 1.8 MB output limit. Large spreadsheets and complex binary documents require dedicated Office/Image/PDF tools.