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CSV To Excel

Drop CSV files to get .xlsx, or .xlsx files to get CSV. A whole batch at once, with a preview before you download. Free, no account, and your files never leave your device.

We store none of your data

Processed in your browser, never uploaded. Money back if it doesn't work — no questions.

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Drag & drop spreadsheets

or click to browse — CSV becomes .xlsx, .xlsx becomes CSV, as many files as you like

A workbook with several sheets converts its first sheet. Nothing is uploaded — the conversion happens on this page.

What CSV To Excel does

Drop CSV files and get .xlsx back, or drop .xlsx files and get CSV — a whole batch at once, not one at a time. Each file shows its row and column count and a preview before you download, so you can see it converted cleanly. Free, no account, and your files never leave your device.

Good for

A bank or system export that came out as CSV
Sending a spreadsheet to someone without Excel
Preparing a CSV for an import that wants .xlsx
Converting a folder of files in one go