EXCEL TOOL
Convert Excel to CSV
Export one worksheet from an Excel workbook as a UTF-8 CSV file directly in your browser. Choose the sheet you need and download it without a server upload.
How to convert Excel to CSV
- Select an .xlsx, .xls, .xlsm or .xlsb workbook.
- If the workbook contains multiple worksheets, choose the sheet you want to export.
- Select Convert Excel to CSV.
- Download the generated UTF-8 .csv file.
Why export an Excel sheet as CSV?
CSV is a simple interchange format supported by databases, analytics platforms, accounting systems and programming tools. Exporting a worksheet to CSV can make it easier to import tabular data into another application without sending the original workbook.
One worksheet at a time
An Excel workbook can contain many sheets, while a CSV file contains only one table. Utilumi therefore lets you choose which worksheet to export. If you need several sheets as separate CSV files, repeat the conversion for each sheet.
What CSV does not preserve
CSV contains cell values separated by delimiters. It does not carry Excel formatting, formulas, charts, multiple worksheets, merged-cell layouts, macros or workbook metadata. Keep the original Excel workbook if you need those features later.
Private browser-based conversion
The selected workbook is read and converted inside the browser session. This avoids an unnecessary file upload for routine spreadsheet work. For regulated, confidential or mission-critical information, always follow your organization's approved security and records policies.
Frequently asked questions
Is my Excel workbook uploaded to a server?
No. The workbook is read in your browser and the CSV file is created on your device. Utilumi does not need to upload the selected workbook for this conversion.
What happens if my Excel file has multiple sheets?
After you select the workbook, choose the worksheet you want to export. CSV can represent one table at a time, so each sheet should be converted separately.
Are formulas and formatting preserved in CSV?
No. CSV stores plain tabular values only. Excel formatting, formulas, charts, merged cells, comments and workbook features are not preserved in the CSV format.
Will Korean and other non-English text work?
The downloaded file is written as UTF-8 CSV with a byte-order mark to improve compatibility with spreadsheet applications such as Microsoft Excel. Very old software may still require manual encoding selection.