Going the other way — from a spreadsheet's CSV into JSON — is what you do when you have data in a sheet and a program or API that wants JSON. It is a fast, offline conversion.
The header row becomes your keys
The important idea is simple: the first row of your CSV, the header, becomes the field names in every JSON object. So a CSV with columns name, email, city turns into a list of objects, each with a name, email and city. Make sure your first row really is a clean set of column titles.
How to convert
- Open the CSV to JSON converter and paste your CSV (header row first).
- It reads the header, then turns every following row into a JSON object.
- Copy or download the JSON array for your app or API.
A couple of things to check
If a cell contains a comma, it needs to be wrapped in quotes in the CSV, or the columns will shift — most exports handle this for you. And remember that CSV values are just text, so numbers may come through as strings; that is usually fine, but worth knowing if your program is strict about types.
The conversion happens in your browser, so your spreadsheet data is never uploaded.