01
ADD YOUR XLSX
Drop the XLSX file into the box above or choose it from your device.
XLSX → JSON / online converter
XLSX to JSON Converter
Convert an Excel workbook to JSON for an API, a script or a web app. Each row becomes an object whose keys are the column headers.
01 / how to
How to convert XLSX to JSON
02
CONVERT TO JSON
JSON is already selected. Press Convert and wait a few seconds.
03
DOWNLOAD
Save the finished JSON file. The original is deleted from our server.
02 / what you get
What happens to your data
Kept
- Every sheet: a workbook with several sheets becomes one object with a key per sheet name
- Numbers stay numbers, text stays text, empty cells become empty strings
- Dates as readable text, for example 2026-01-15
- Column headers from the first row as the object keys
Good to know
- A workbook with a single sheet becomes a plain array of row objects, with no sheet name around it.
- Formulas are exported as their last calculated result.
- Formatting, merged cells, charts and images are not part of JSON and are dropped.
- Duplicate column headers overwrite each other in an object, so give every column a unique name first.
03 / formats
XLSX vs JSON
XLSX
An XLSX file is a modern Excel workbook: sheets of cells with numbers, text, formulas and formatting. It is the default for spreadsheets today. Converting it gives you the first sheet as plain data (JSON keeps every sheet), so other tools can read it.
Used in: Excel · Business reports · Financial data
JSON
A JSON (JavaScript Object Notation) file stores structured, nested data as readable text — objects, arrays, and key-value pairs. It's the standard format for web APIs and app configuration, so you'll often get one from a developer, an API response, or an app's settings export.
Used in: Web APIs · App configs · Settings exports
04 / more
More conversions
Have a different file? Open the main converter — it detects the format for you.