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Convert XLSX to JSON

Convert spreadsheets and tables from XLSX to JSON. Dates, numbers and text are recognised and carried over to the new format.

Drop your files hereor (XLSX and over 40 other formats). You can also paste an image.No upload: everything happens on your device

How to convert XLSX to JSON

  1. Add your XLSX files

    Drag one or more XLSX files onto the dashed area, or tap it to pick them from your device.

  2. Choose JSON and the options

    JSON is already selected; for CSV you can choose the separator.

  3. Convert and download

    Press “Convert to JSON”. When it’s done, download the files one by one or all together in a ZIP archive.

Good to know. Formulas are converted to their last calculated value.

XLSX and JSON compared

Source format

XLSX

Microsoft Excel workbook

Excel’s format: tables with several sheets, formulas, number formats and styles. It’s the most common way to exchange tabular data in business.

Best for
Tables, budgets, lists to sort and filter.
Limits
Not well suited for importing data into programs and websites: CSV is used there.
Type
spreadsheet
Multiple sheets
yes
Programs
Excel, LibreOffice Calc, Google Sheets, Numbers
Extensions
.xlsx
Since
2007
All about the XLSX format

Target format

JSON

JavaScript Object Notation

The format websites, apps and web services use to talk to each other: objects with names and values, even nested. Converting a table to JSON makes it ready for code.

Best for
Developers, APIs, imports into databases and apps.
Limits
For non-programmers it’s less convenient than a spreadsheet.
Type
structured data
Human-readable
yes, it’s text
Used by
APIs, apps, configuration files
Extensions
.json
Since
2001
All about the JSON format

Questions about XLSX and JSON

What happens to multiple sheets?

Formats with several sheets (XLSX, ODS, HTML, PDF) keep them all; CSV and TSV hold only one: in the options you can choose to convert the first sheet or create one file per sheet.

Are my XLSX files uploaded to a server?

No. The conversion from XLSX to JSON happens entirely in your browser, using your device’s computing power. Files aren’t sent or stored anywhere: when you close the page they’re gone from memory too.

How many files can I convert at once?

Up to 100 files at a time. There’s no fixed size limit: it depends on your device’s memory. On smartphones it’s best to work in smaller batches with heavy files such as videos.

Does it work on iPhone and Android?

Yes, with up-to-date Safari, Chrome, Firefox, Edge and Samsung Internet. On phones, converted files end up in the Downloads folder or the Files app.

Do I need an internet connection?

Only to open the page (and, the first time, to download the components needed for that type of file). After that the conversion keeps working even if the connection drops.

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