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CSV ↔ JSON Converter

The CSV ↔ JSON Converter lets you transform tabular CSV/Excel files into structured JSON objects, or export JSON data back into spreadsheet‑friendly CSV format. All conversions happen locally in your browser, so your data is never uploaded to our servers.

How to Use

  1. Upload a CSV or Excel file (XLSX).
  2. Preview the parsed JSON structure instantly.
  3. Copy the JSON to clipboard or download as a .json file.
  4. Paste JSON into the input area to convert it back to CSV or Excel.

Example

# CSV
name,age,city
Alice,30,New York
Bob,25,London

# JSON
[
  { "name": "Alice", "age": 30, "city": "New York" },
  { "name": "Bob", "age": 25, "city": "London" }
]

Privacy & Security

This converter works 100% in your browser using JavaScript. Files are never sent to a backend server, ensuring maximum privacy.

Try It Now

Open the live tool here: CSV ↔ JSON Converter Tool