Convert Excel to JSON Online
Convert Excel (.xlsx/.xls) or CSV files into clean JSON.
Converting spreadsheet data into JSON is a common step when feeding data into an app, API, or script that expects structured data rather than rows and columns.
How rows and columns become JSON objects
Each row of your spreadsheet becomes one JSON object, with your column headers becoming the object's keys — this means clean, consistent headers in your original spreadsheet directly translate into clean, usable JSON keys in the output.
Frequently asked questions
What happens to empty cells in my spreadsheet?
Empty cells are converted to null values in the resulting JSON, preserving the structure even where data is missing, rather than skipping that field entirely.
Can I convert just one sheet from a multi-sheet workbook?
Yes — if your file has multiple sheets, a sheet selector lets you choose which one to convert; each sheet is processed independently.