File Conversion
Convert XLSX to JSON
Free browser-based XLSX → JSON converter. Your file is processed locally — nothing is uploaded to a server. No signup, no watermark, no queue.
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Why Convertoza
100% Private
Your XLSX file stays on your device. Conversion runs entirely in your browser.
Instant
Most XLSX → JSON conversions finish in under a second.
Free forever
No signup, no credit card, no watermark — supported by ads.
How to convert XLSX to JSON
- Drop your XLSX file in the converter above.
- Confirm JSON as the output and tweak any options.
- Click Convert, then download your JSON file.
Frequently asked questions
- Is XLSX to JSON conversion really free?
- Yes — every conversion runs in your browser at no cost, with no signup or watermark.
- Is my file uploaded anywhere?
- No. The XLSX → JSON conversion happens entirely on your device using client-side JavaScript.
- What's the maximum file size?
- There's no hard limit, but very large files may be slow because your browser holds them in memory.