Excel XLSX to JSON Converter
Convert a selected XLSX worksheet into JSON records using its first row as unique property names.
Your input is sent to this site only after you choose Convert on server. The conversion runs for this request and no history is saved. Upload up to 4 MiB combined; Office files have a 2 MiB limit.
Choose your file
Choose a file or load the example to see how the converter works.
Choose your options
The defaults work for most files. Change a setting only when you need to.
How to use Excel XLSX to JSON Converter
- Choose the example or select your input files in the required format.
- Check the options, then select Convert on server to upload and process the input.
- Review the result and download the converted file.
What this conversion produces
Read an Excel table as structured records for a test fixture, application import or review. The first worksheet row becomes the JSON property names and subsequent nonempty rows become objects. Numbers and booleans retain their types; empty cells become null. Choose a worksheet position when a workbook contains more than one sheet.
Supported input and practical limits
Header cells must be unique and nonblank, and the workbook must contain a rectangular table within 50,000 cells. Cell formatting does not change the underlying numeric value, so use real text cells for leading-zero identifiers. Dates are emitted as ISO strings. Stored formula results can be read, but formulas are never recalculated and missing cached results are rejected. XLS, encrypted workbooks and files above the documented ZIP limits are not supported.
What should I know before converting?
Header cells must be unique and nonblank, and the workbook must contain a rectangular table within 50,000 cells.
Is input uploaded?
This tool sends input to this site’s conversion API after you select Convert on server. Files use bounded workers and, when needed, private temporary folders deleted after processing or cancellation. No conversion history is saved. The converter does not upload files to a third-party conversion service.