CSV to JSON converter
Paste CSV and get a JSON array of objects — the first row is the keys.
CSV to JSON converter
Convert CSV to JSON instantly: paste comma-separated rows and get a clean JSON array of objects. The first row is treated as the header, so each value is mapped to its column name. Everything runs in your browser — your data is never uploaded.
How it works
The first line provides the keys; every following line becomes one object. For example name,age + Alice,30 becomes [{"name":"Alice","age":"30"}]. Values are kept as strings so nothing is lost or rounded.
Tips
- Use a header row with short, unique column names.
- This is a lightweight parser: values containing commas inside quotes aren’t split-aware — keep cells simple.
Frequently asked questions
Does the first row become the keys? Yes — the header row defines each object’s property names.
Is my CSV uploaded anywhere? No, the conversion is 100% local in your browser.