Toolkite

100% Browser-Based · Zero Upload · Your Files Never Leave Your Device

All processing happens in your browser. We never see your files.

JSON to CSV Converter Online Free — CSV to JSON & Excel

Convert JSON↔CSV and export Excel (.xlsx) in your browser. Flatten nested JSON in Pro.

Nest depth: free ≤10 levels · Pro deep flatten. Size: free ≤25MB · Pro ≤50MB.

How to use

  1. 1

    Paste or upload

    Paste JSON/CSV or drop a .json / .csv file (free ≤25MB).

  2. 2

    Convert

    Choose JSON→CSV, CSV→JSON, or JSON→Excel.

  3. 3

    Download

    Copy or download the result instantly.

Frequently asked questions

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