Convert JSON to XLSX online in seconds — free, with no sign-up. XLSX is lossless and ideal for data, calculations and shared spreadsheets. Your files are encrypted and deleted automatically after 24 hours.
XLSX
Microsoft Excel — Excel's format storing sheets, formulas and charts as XML.
How to convert JSON to XLSX
- 1Upload your JSON file
Click “Choose a file” or drag and drop your JSON file onto the page — no sign-up or email needed.
- 2Convert to XLSX
XLSX is already selected as the output. Open Options to fine-tune quality if you like, then click Convert.
- 3Download your XLSX file
Your XLSX file is ready in seconds — click Download to save it. Files are automatically deleted after 24 hours.
Frequently asked questions
Does converting JSON to XLSX lose quality?
Converting JSON to XLSX keeps your content intact. We use high-quality defaults so your XLSX file looks as close to the original as the format allows.
Is the JSON to XLSX converter free?
Yes — converting JSON to XLSX is completely free. There's no watermark, no sign-up and no email required, and you can convert as many files as you like.
Are my JSON files private and secure?
Yes. Your uploads are encrypted in transit, processed privately, and automatically deleted within 24 hours. We never share, sell or look at your files.
Can I convert JSON to XLSX on iPhone, Android, Mac or Windows?
Yes. The converter runs entirely in your browser, so it works on any device — iPhone, iPad, Android, Mac, Windows or Linux — with nothing to download or install.
How long does it take to convert JSON to XLSX?
Most files convert in a few seconds. Larger files take a little longer, and your upload speed is usually the limiting factor. There's no queue and no waiting for an email.
What else can I convert JSON files to?
Besides XLSX, you can convert JSON to CSV, TSV, YAML and more — see the full list of JSON conversions below.
Other conversions
Last updated July 2026