Convert an Excel sheet, or every sheet at once, to CSV in your browser. Pick the delimiter, add a UTF-8 BOM for Excel and preview the rows first. Files are never uploaded.
Works in your browser. What you paste or upload is processed on your device.
Pick an .xlsx, .xls or .ods file, or drag it onto the box. It opens in your browser and shows its sheets.
Select the sheet you need, or All sheets to get one CSV per sheet.
Choose the delimiter, how numbers and dates are written, and whether to add a UTF-8 BOM.
Look over the first rows to confirm you picked the right sheet.
Press Convert. Download the CSV, or the ZIP when you exported several sheets.
A CSV file is plain text: one line per row, with the cells separated by a delimiter, usually a comma. Databases, CRMs, email tools and code all read it, which is why exports and imports so often ask for CSV instead of an Excel workbook. This converter opens your .xlsx, .xls, .xlsm, .xlsb or .ods file in the browser, lists every sheet with its row and column count, shows the first rows, and writes the sheet you pick as CSV. Choose "All sheets" and you get one CSV per sheet, downloadable together as a ZIP.
You control the parts that usually go wrong. Pick comma, semicolon (for Excel set up with a comma as the decimal mark, common in Europe), tab or pipe. Keep numbers and dates as Excel displays them (1,234.50; dates in Excel's default short format are written as 2026-11-03 so no reader mixes up day and month) or export the raw values at full precision. Add a UTF-8 byte order mark so Excel reopens accents and non-Latin text correctly, or leave it off for databases and scripts.
Limits: CSV holds values only. Formatting, colours, merged cells, charts, images and formulas are not kept; each formula cell is written as the result Excel last calculated and saved. Password-protected workbooks need the password removed in Excel first. Very large workbooks (hundreds of thousands of rows) can take a while on a phone because the whole file is read in memory.
Most CSV problems come from the export, not the data: a semicolon where the importer expects a comma, garbled accents because the file has no BOM, or long numbers shortened to 1.23E+15 (choose Raw values to keep every digit). Doing the conversion with these choices visible, and with a preview of the rows before you spend a run, means the file imports the first time. Because the workbook never leaves your device, it also works for payroll, customer lists and other files you shouldn't upload to a stranger's server.
Something else? Ask the team
No. The workbook is read and converted by JavaScript in your browser. The only thing our server sees is a request to count the run against your daily free use or credits; the file and its contents never leave your device.
Choose All sheets in the sheet picker. Each sheet that has data becomes its own CSV named after the workbook and the sheet, and Download all gives you one ZIP. Empty sheets are skipped.
Excel assumes an old Windows encoding unless the file starts with a UTF-8 byte order mark. Leave "Add UTF-8 BOM" on and Excel will show the text correctly. Turn it off only if a database or script complains about an extra character at the start.
Use comma for most software, Google Sheets and anything in the US, UK or India. Use semicolon if your Excel uses a comma as the decimal separator (Germany, France, Spain, Brazil and others), because there a comma-separated file opens in a single column.
CSV can only store values, so each formula cell is written as the value Excel last calculated and saved in the file. If a value looks out of date, open the workbook in Excel, let it recalculate, save, and convert again.
Yes. Choose the file from Files, Google Drive or your downloads in Safari or Chrome. The CSV downloads to your phone. Very large workbooks may be slow on older phones because the whole file is read in memory.
No. A password-protected workbook is encrypted, so remove the password in Excel first (File › Info › Protect Workbook), save, and convert the saved copy.
You get one free run of this tool per day, with no account. After that, each run costs 5 credits from a free AI Rank Lab account (1 credit = 1 US cent). One run is one press of the convert button.
Each one opens on its own page and works straight away, with no sign-up.
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