CSV→XLSConverter
Convert your CSV files to XLS format instantly. Free, fast, and secure - your files never leave your browser.
↔ Convert XLS to CSV insteadDrop file or click to browse
Max 100MB • Auto-deletes after 3 min
How to Convert CSV to XLS
Upload Your File
Drag & drop your CSV file or click to browse. Files up to 100MB are supported.
Convert
Click "Convert to XLS" and wait a few seconds for processing.
Download
Download your converted XLS file instantly. No registration needed.
Why Convert CSV to XLS?
Converting CSV to XLS improves compatibility, reduces file size, or enables your content to work with specific applications and platforms that require the XLS format.
About CSV and XLS
What is CSV?
CSV (Comma-Separated Values) is a plain-text format for tabular data where values are separated by commas. It's the universal interchange format for databases, spreadsheets, and data analysis tools.
What is XLS?
XLS is the legacy Microsoft Excel binary format used before 2007. While superseded by XLSX, it remains necessary for compatibility with older Excel versions and some enterprise systems.
Frequently Asked Questions
How do I convert CSV to XLS?
Upload your CSV file using the converter above, then click "Convert". Your file will be processed and you can download the converted XLS file immediately. The entire process takes just seconds.
Is it free to convert CSV to XLS?
Yes, ModConvert is completely free to use. There are no hidden charges, no registration required, and no watermarks on your converted files.
Is my CSV file safe when converting?
Absolutely. Your files are processed securely and are never stored permanently on our servers. Files are automatically cleaned up after conversion to protect your privacy.
What is the maximum file size for CSV to XLS conversion?
You can convert CSV files up to 100MB in size. This covers most common use cases for spreadsheet files.
Can I convert multiple CSV files at once?
Yes, you can upload and convert multiple CSV files. Each file will be converted to XLS format individually for the best quality results.