CSV → JSON
Paste CSV data to convert it to JSON format.
About the CSV to JSON converter
This tool converts CSV data to JSON instantly. It is useful for turning spreadsheet exports, database dumps, and reports into structured data your code can consume.
The first CSV row is treated as the header and becomes the JSON property names; each following row becomes one object in the resulting array. The conversion runs entirely in your browser, so your data is never uploaded to a server — safe for confidential datasets.
How to use it
- Paste your CSV data into the input panel.
- The converted output appears automatically.
- Review the result and adjust the input if needed.
- Copy or download the JSON output.
Frequently asked questions
Is my data uploaded anywhere?
No. The conversion happens locally in your browser; nothing is transmitted or stored.
Is there a file size limit?
No fixed limit — files of several megabytes convert in seconds since everything runs on your device.
What happens to invalid CSV input?
The tool reports a clear error instead of producing broken output, so you can fix the input and retry.
Can I convert in the other direction?
Yes — the JSON converter section includes tools for both directions between JSON, CSV, TSV, XML, and YAML.