Excel to CSV

About the Excel to CSV

Excel to CSV opens an .xlsx workbook in your browser, lets you pick a worksheet and shows its size and a preview before you export it. You choose the delimiter — comma, semicolon, tab, pipe or a custom character — and the output encoding: UTF-8 with or without a byte-order mark, UTF-16, or Windows-1252 with a report of any characters it cannot store.

You also choose how values are written. “As displayed” reproduces Excel’s common number and date formats, including leading zeros from formats like 00000. “Raw” writes full-precision numbers and ISO 8601 dates. Formulas are never recalculated: the results Excel saved with the file are used, and formulas without a saved result are listed.

How to use

1. Choose or drop an .xlsx file.
2. Pick the worksheet. Its rows, columns and formula count are shown.
3. Choose formatted or raw values, the delimiter and the encoding.
4. Check the preview and any warnings.
5. Click Download CSV to save the whole worksheet.

Key features

• Worksheet picker that also shows hidden sheets.
• Comma, semicolon, tab, pipe or a validated custom delimiter.
• UTF-8, UTF-8 with BOM, UTF-16 LE and Windows-1252 (with unsupported characters reported).
• Formatted display values or raw values with ISO 8601 or serial dates.
• Cached formula results; missing results are reported, never guessed.
• Spreadsheet-safe mode so text like =SUM() cannot run as a formula when the CSV is reopened.

Best practices

• Use UTF-8 with BOM if the CSV will be opened in Excel.
• Use raw values when the CSV feeds another program or database.
• Save the workbook in Excel first if formulas show as missing results.

Benefits

• No Excel installation needed.
• Leading zeros, dates and Unicode survive the conversion.
• Private: workbooks never leave your device.

Frequently asked questions