Use the CSV to JSON in three steps
Paste CSV
Include column names in the first row.
Convert the rows
The parser maps each data cell to its header.
Copy or download JSON
Use the formatted array in an app, API, or script.
How headers become keys
Each first-row value becomes a property name. Blank headers receive a safe generated name, while duplicate header names are rejected to prevent overwritten data.
Values remain strings
CSV does not reliably preserve data types, so values are emitted as strings. Convert numbers, booleans, and dates in your application when their intended types are known.
CSV to JSON FAQ
Does the first row need headers?＋
Yes. The first row supplies the property names used in every JSON object.
Are quoted commas supported?＋
Yes. A comma inside a correctly quoted field remains part of that value.
How are double quotes escaped in CSV?＋
Inside a quoted field, two consecutive double quotes become one literal quote.
Are numeric values converted to numbers?＋
No. Values remain strings to avoid changing IDs, leading zeros, or date-like text unexpectedly.
What happens when a row has missing cells?＋
Missing values are represented as empty strings for the corresponding headers.
Can I download the result?＋
Yes. The formatted array can be saved as a .json file.