Upload Excel (.xlsx/.xls/.ods) or CSV files and convert to JSON, CSV, XML, or HTML; export JSON or CSV data to a downloadable .xlsx file — fully client-side using SheetJS.
Upload Excel (.xlsx/.xls/.ods) or CSV files and convert to JSON, CSV, XML, or HTML; export JSON or CSV data to a downloadable .xlsx file — fully client-side using SheetJS.
Open the Excel → Data tab, upload an .xlsx, .xls or .ods file and choose JSON as the output. CSV, XML and HTML are also available.
Use the Data → Excel tab with JSON, CSV, XML or YAML input and download the generated .xlsx.
Yes, the Excel → Data tab shows a sheet selector for workbooks with several sheets, and you convert one sheet at a time to JSON, CSV, XML, YAML or HTML.
There is a Compare tab for comparing spreadsheet data.
No. This tool runs entirely in your browser — your input is processed locally on your device and is never uploaded or stored on a server.