How to Convert CSV to JSON (Quick Guide)

CSV and JSON are two of the most common data formats. Knowing how to move between them is a handy skill for developers, analysts and spreadsheet users.

CSV vs JSON

CSV (comma-separated values) is a simple table — great for spreadsheets. JSON (JavaScript Object Notation) is structured data — great for APIs and apps.

When to convert

• Exporting spreadsheet data for a web app? CSV → JSON.
• Turning API data into a spreadsheet? JSON → CSV.

Convert instantly and privately

Our CSV to JSON Converter turns a CSV (with a header row) into a clean JSON array in your browser — nothing is uploaded. Going the other way? Use the JSON to CSV Converter and download the file.