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Excel to CSV Converter

Convert Excel XLSX workbooks to CSV — one file per sheet. Free, private Excel converter.

Your files never leave your device

How to convert Excel to CSV

  1. 1

    Choose your Excel files

    Click the upload area or drag files onto it. Nothing is uploaded — files are opened locally.

  2. 2

    Start the conversion

    Press the convert button. Your browser converts the files in seconds.

  3. 3

    Download the result

    Save each file individually or everything at once as a ZIP.

Export spreadsheets to CSV for imports into databases, CRMs, e-commerce platforms and analytics tools. Every sheet in the workbook becomes its own CSV file.

What is Excel?

XLSX is the Microsoft Excel workbook format. It supports multiple sheets and formatting, and opens in Excel, Google Sheets, Numbers and LibreOffice.

What is CSV?

CSV (Comma-Separated Values) stores tables as plain text, one row per line. It is the universal exchange format for spreadsheets, databases and analytics tools.

Safe for confidential files

Unlike upload-based converters, ZapMorph processes files inside your browser tab. Your documents are never transmitted, stored or logged — close the tab and they’re gone.

Frequently asked questions

Is the excel to csv converter free?

Yes. Convert 1 file a day without an account, or 5 files a day with a free account. Pro removes all daily limits.

Are my files uploaded to a server?

No. The conversion runs entirely in your browser, so your files never leave your device. We only count how many files you convert — never their names or contents.

What is the maximum file size?

Up to 25 MB per file without an account, 50 MB with a free account, and 1 GB on Pro. Very large files also depend on your device’s memory.

Can I convert multiple Excel files at once?

Yes. Select several Excel files at once — up to 5 on the free plan or 50 on Pro — and download all results in a single ZIP.

Does it work on Mac, Windows, iPhone and Android?

Yes. It works in any modern browser — Chrome, Edge, Firefox and Safari — on desktop and mobile, with nothing to install.

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