Your data never leaves your device

Excel (XLSX) → CSV converter

Turn an Excel sheet into CSV. Pick the sheet you need — encoding stays intact.

Drop an Excel file (XLSX·XLS) here or click to select

XLSX · XLS · ODS — files are processed on your device only

📁 Choose file

Private by design — every conversion runs inside your browser (JavaScript), so your data is never uploaded anywhere. Safe for customer lists, sales figures and personal data. It even works offline.

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Frequently asked questions

What if my workbook has multiple sheets?

A sheet picker appears after you load the file. Select any sheet and download it as its own CSV.

Will the CSV re-open correctly in Excel?

Yes. The CSV includes a UTF-8 BOM so Excel detects the encoding correctly and non-ASCII text is preserved.

My Korean/legacy CSV shows garbled characters

Many CSV files saved by older spreadsheet apps use legacy encodings such as EUC-KR (CP949). sheetmoa first reads your file as UTF-8 and, if it detects broken characters (�), automatically retries with the EUC-KR decoder. Legacy .xls files are read with codepage 949 as a fallback too. If it still looks wrong, re-save the file as "CSV UTF-8" in Excel.

Is my data uploaded to a server?

No. Every conversion runs inside your browser and your file is never sent over the network. Safe even for customer lists and confidential spreadsheets.

Is it free?

Completely free — no limits on file count or size, and no sign-up.