Excel → JSON
Import Excel to JSON
Drop your file here
Supports .xlsx · .xls · .csv · .tsv
Excel to JSON Converter: Import XLSX & XLS to JSON Online
.xlsx or .xls files are taken by this converter and clean JSON output is produced instantly. The spreadsheet is uploaded, the sheet to convert is selected, data is previewed, and the preferred output structure is chosen. Headers from the first row become JSON keys. Empty cells become null, numbers stay as numbers, and dates are converted to ISO 8601. Commonly searched as "xlsx to json", "xls to json converter", and "online excel to json converter".
Sheet selection
Excel workbooks often have multiple sheets. After uploading, which sheet to convert can be selected, or all sheets can be converted at once (each becomes a separate array). Headers from the first row become your JSON keys automatically.
Handling empty cells and types
Empty cells become null (not empty strings), number cells stay as numbers, and date cells are converted to ISO 8601 strings. This gives clean, predictable JSON that works with strict parsers without manual cleanup.