Convert CSV to JSON on Mac
Select the CSV files in Finder, press ⌥ F, choose JSON and press Return. FileFlip saves each JSON next to its original and works without an internet connection.
How to convert CSV to JSON with FileFlip
Select the CSV files
In Finder or on the Desktop. One file, or a whole folder with ⌘ A.
Press ⌥ F
FileFlip opens next to the selection and lists the formats it can make from CSV. Type “JSON” to jump to it.
Choose JSON and press Return
The JSON files appear next to the originals with the same names. The CSV files stay as they are.
CSV and JSON
CSV has no structure beyond rows and columns, which code and config files often need. JSON is what code, web APIs and many apps read.
What changes when you convert
- Each row becomes a record. CSV has no data types, so check numbers and dates after converting.
| Property | CSV | JSON |
|---|---|---|
| Full name | Comma-separated values | JavaScript Object Notation |
| Best for | Moving tables between spreadsheets, databases and tools | Data for code, web APIs and apps |
| Opens in | Excel, Numbers, Google Sheets and most databases | Every programming language and code editor |
| File extension | .csv | .json |
| In FileFlip | Opens and saves | Opens and saves |
Other ways on a Mac
Here’s what you can do with what’s already on your Mac.
No built-in converter
macOS doesn’t include an app that converts CSV to JSON, and Numbers can’t save JSON. The usual alternative is a short script.
Questions about CSV and JSON
Can I convert many CSV files at once?
Yes. Select them all in Finder, press ⌥ F and choose JSON. Progress moves to the menu bar, so you can close the panel and keep working.
Where is the JSON file saved?
Next to the original, with the same name and the .json extension. The CSV file isn’t changed. In Settings you can choose a different folder instead.
Can I convert JSON back to CSV?
Yes, FileFlip converts JSON to CSV as well.
Are my files uploaded anywhere?
No. FileFlip converts files on your Mac and works with the internet turned off.
Convert a folder of data files at once
FileFlip also handles images, camera raw files, video, audio, PDFs and documents. Requires macOS 14 Sonoma or later.
Coming soon for Mac