Convert XLSX to JSON

Free online XLSX to JSON converter. Fast, secure, no signup required.

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Accepted: XLSX files · Max 100 MB per file

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Need to convert XLSX to JSON? MegaConvert makes it easy. Upload your Microsoft Excel Open XML Spreadsheet (XLSX) file and get a JavaScript Object Notation (JSON) file in seconds — no software to install, no signup required. Whether you need this conversion for data analysis, office work / email attachments, our online converter handles it instantly. Free for files up to 25MB, with support for larger files up to 2GB.

How to Convert XLSX to JSON Online

1
Upload your XLSX file
Click the upload area or drag and drop your XLSX file. Files up to 25MB are free. Larger files are supported with pay-per-use.
2
Choose JSON as output format
JSON is automatically selected on this page. You can adjust conversion settings if needed.
3
Click Convert
Hit the Convert button to start processing. Your file will be converted using our high-performance servers.
4
Download your JSON file
Once conversion is complete, click Download to save your new JSON file. Free files are available for 1 hour.

About XLSX Format

Modern Microsoft Excel format based on Open XML standard with ZIP compression.

Full name: Microsoft Excel Open XML Spreadsheet

Developer: Microsoft (2007)

About JSON Format

Lightweight data interchange format that is easy for humans and machines to read and write.

Full name: JavaScript Object Notation

Developer: Douglas Crockford (2001)

Frequently Asked Questions

Upload your XLSX file to MegaConvert.io, select JSON as the output format, and click Convert. Your converted file will be ready to download in seconds. No software installation required.

Yes! Files up to 25MB can be converted for free, up to 3 times per day. For larger files, pay-per-use pricing starts at just $2 for files up to 100MB.

Absolutely. All uploaded files are encrypted in transit (HTTPS), scanned for viruses, and automatically deleted after conversion. We never share or access your files.

Free users can convert files up to 25MB. Pay-per-use supports files up to 2GB. Subscribers get up to 2GB with priority processing.

Modern Microsoft Excel format based on Open XML standard with ZIP compression. Developer: Microsoft (2007).

Lightweight data interchange format that is easy for humans and machines to read and write. Developer: Douglas Crockford (2001).

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