JSON to Excel

Instantly convert JSON responses or arrays into native Excel (.xlsx) files. Automatically flattens nested objects and formats

Your files never leave your device. Processed locally. 100% private.

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How To Use JSON to Excel

Complete your task perfectly in just three straightforward steps.

1

Upload JSON

Drop your JSON file into the upload zone. It accepts both flat arrays and deeply nested objects.

2

Automatic Flattening

The tool instantly traverses your JSON structure, flattening nested fields into dot-notation columns.

3

Download Excel

Download the fully formatted, native .xlsx file instantly without any server uploads.

FAQ

Everything you need to know about the JSON to Excel.

How are nested objects handled?

Nested objects are automatically flattened using dot notation (e.g., user.address.city becomes a distinct column header).

Are arrays inside objects supported?

Yes, arrays are stringified into a single cell to ensure your data fits perfectly into an Excel grid.

Is my data uploaded to a server?

No. Everything is processed 100% locally in your browser memory via JavaScript and WASM. Your data never leaves your machine.

Is there a file size limit?

Yes. The free tier limits files to 10MB to ensure smooth local browser performance. Refinata Pro users can process massive files up to 200MB.

What's the difference between this and JSON to CSV?

While both flatten data, this tool generates a native Excel (.xlsx) file with proper data types, whereas CSV is pure comma-separated text.

How is this different from online JSON-to-CSV tools like ConvertCSV or JSON2CSV?

Most online converters upload your file to a server for processing, which is a privacy risk for sensitive data. Refinata processes everything locally. Additionally, most tools fail on deeply nested JSON or API wrapper objects — Refinata's auto-detection handles both gracefully. The live table preview also lets you verify the output before downloading, which other tools lack.

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