FileopiaConvert JSON to Excel
Convert JSON arrays to Excel XLSX. Nested fields become dot.key columns.
- Upload
- Options
- Download
- ✓ 100% free
- ✓ No sign-up
- ✓ No limits
- 🔒 Files never leave your device
How to: JSON to Excel
- Select a JSON file.
- Keep Excel selected.
- Download the XLSX.
Get JSON data into Excel for filtering, charts and pivot tables. Nested fields become dot.key columns.
Common uses
- Analyse exported app data.
- Create reports from API responses.
Tips for best results
- Arrays of objects with the same keys give the cleanest tables.
What JSON looks like in a spreadsheet
An array of objects maps naturally to rows and columns: each object becomes a row and each key becomes a column header. Nested objects like {"address":{"city":"Paris"}} become a column named address.city, so everything stays flat and filterable in Excel.
Handling arrays and mixed data
If objects have different keys, every key gets a column and missing values stay empty. Arrays inside objects are written as text so no data is lost. Numbers stay numeric, so you can sum, sort and build pivot tables immediately.
Why use Fileopia for JSON to Excel?
| Fileopia | Typical upload-based sites | |
|---|---|---|
| Files uploaded to a server | No – processed on your device | Yes |
| Sign-up required | Never | Often for bigger jobs |
| Hourly / daily task limits | None | Common on free plans |
| Watermark on output | Never | Sometimes |
| Works offline after loading | Yes, for most tools | No |
Your files never leave your device
JSON to Excel runs entirely in your browser using JavaScript and WebAssembly. Your files are read from your disk into this tab, processed in memory and saved straight back to your downloads folder – they are never uploaded to Fileopia or any third party.
- Test it yourself: once this page has loaded, switch off Wi‑Fi or mobile data and run the tool – it keeps working.
- Check the network: open your browser’s developer tools (F12 → Network) while processing; you will see no file upload requests.
- Nothing to delete: close the tab and the data is gone – there is no server copy, no retention period and no account.
Frequently asked questions
What JSON structure works best?
An array of objects with similar keys.
Can I open the result in Google Sheets?
Yes, XLSX files open in Excel, Google Sheets, Numbers and LibreOffice.
Is JSON to Excel really free?
Yes. Every tool on Fileopia is 100% free with no file limits, no sign-up and no watermarks. The site is supported by unobtrusive ads.
Are my files uploaded to a server?
No. Fileopia processes your files directly in your browser using JavaScript. Your documents never leave your device, so they stay completely private.
Does it work on mobile?
Yes. Fileopia works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux.