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Konverter CSV til XLS

Free online CSV to XLS converter. Fast, secure, no signup required.

12.9K+ files converted

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Accepted: CSV files · Max 100 MB per file

csv xls

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Need to convert CSV to XLS? MegaConvert makes it easy. Upload your Comma-Separated Values (CSV) file and get a Microsoft Excel Spreadsheet (XLS) file in seconds — no software to install, no signup required. Whether you need this conversion for data analysis, office work / email attachments, our online converter handles it instantly. Free for files up to 25MB, with support for larger files up to 2GB.

How to Convert CSV to XLS Online

  1. 1
    Upload your CSV file

    Click the upload area or drag and drop your CSV file. Files up to 25MB are free. Larger files are supported with pay-per-use.

  2. 2
    Choose XLS as output format

    XLS is automatically selected on this page. You can adjust conversion settings if needed.

  3. 3
    Click Convert

    Hit the Convert button to start processing. Your file will be converted using our high-performance servers.

  4. 4
    Download your XLS file

    Once conversion is complete, click Download to save your new XLS file. Free files are available for 1 hour.

Why Convert CSV to XLS?

  • **Reduce file size** — Converting between formats can significantly reduce file size, making files easier to share via email or cloud storage.
  • **Software requirements** — Your software or platform may require XLS format specifically. Converting ensures full compatibility.

CSV vs XLS — Format Comparison

Feature CSV XLS
Full Name Comma-Separated Values Microsoft Excel Spreadsheet
Developer N/A Microsoft
First Released 1972 1987
Category Spreadsheet Spreadsheet
Extension .csv .xls
MIME Type text/csv application/vnd.ms-excel

Formulas, charts, and macros may not transfer to simpler formats like CSV.

About CSV Format

Simple text format for tabular data where values are separated by commas.

Full name: Comma-Separated Values

Developer: N/A (1972)

About XLS Format

Legacy Microsoft Excel binary format for spreadsheets with formulas and charts.

Full name: Microsoft Excel Spreadsheet

Developer: Microsoft (1987)

Vanlige Spørsmål

Upload your CSV file to MegaConvert.io, select XLS as the output format, and click Convert. Your converted file will be ready to download in seconds. No software installation required.
Yes! Files up to 25MB can be converted for free, up to 3 times per day. For larger files, pay-per-use pricing starts at just $2 for files up to 100MB.
Absolutely. All uploaded files are encrypted in transit (HTTPS), scanned for viruses, and automatically deleted after conversion. We never share or access your files.
Free users can convert files up to 25MB. Pay-per-use supports files up to 2GB. Subscribers get up to 2GB with priority processing.
Simple text format for tabular data where values are separated by commas. Developer: N/A (1972).
Legacy Microsoft Excel binary format for spreadsheets with formulas and charts. Developer: Microsoft (1987).