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CSV → Excel (XLSX) converter

Turn a CSV file into an Excel workbook — including legacy-encoded CSVs.

Drop a CSV file here or click to select

Commas, tabs and semicolons detected automatically · legacy encodings repaired

📁 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

Will the XLSX open properly in Excel?

Yes. It is written in the standard Open XML (xlsx) format and opens in Excel, Google Sheets, LibreOffice and more.

My file uses tabs or semicolons instead of commas

No problem — the delimiter is detected automatically, so TSV and semicolon-separated files work as-is.

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.