One sheet
The CSV becomes a workbook with one sheet named Data. Empty cells and Unicode text are preserved.
Convert a CSV to a simple Excel workbook with Unicode text preserved and no upload to a server.
Your data never leaves your browser
The CSV becomes a workbook with one sheet named Data. Empty cells and Unicode text are preserved.
CSV has no reliable type information, so values are kept as text to avoid changing long IDs, leading zeroes, and date-like codes.
The output is intentionally plain. It does not guess colors, formulas, or number formats that were never present in the CSV.