Convert XLS to CSV Files Online for Free.
Free online tool to convert xls to csv files quickly and securely. No installation required – start converting your files in just a few clicks!
Drag and drop your files here or click to upload.
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Maximum file size is 10MB
How It Works
How to Convert XLS to CSV
Click inside the file drop area to upload your XLS file or drag & drop it.
Select CSV as the output format and click the 'Convert' button.
Download the converted CSV file instantly after conversion.
You can also send a link to the converted file via email. (Optional)
Convert Your XLS files to other formats
RunConvert.com can convert your XLS files to these other formats:
Convert Your XLS files to other formats
Convert Files to XLS Format
RunConvert.com supports these converters to XLS format:
Convert Files to XLS Format
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Frequently Asked Questions
Here are some common questions and answers about xls file conversions ask by our users on RunConvert.com.
Frequently Asked Questions
Q: How do I convert a spreadsheet for print?
A: Convert it to PDF—it locks everything in place. Make sure your print settings (like fit to page) are right before converting.
Q: Will formulas work after conversion?
A: If you're converting to another spreadsheet format like ODS or XLSX, formulas usually transfer just fine. But CSV or PDF? Not so much—they flatten the data.
Q: Do formulas still calculate after converting XLSX to ODS?
A: In most cases, yes. Excel and LibreOffice play nicely together—but complex macros or newer functions might act up a bit.
Q: Can I automate spreadsheet conversions using RunConvert?
A: Not yet, but we’re working on APIs for bulk or scheduled conversions. If you’re a dev or data nerd, stay tuned!
Q: What’s the best format to share spreadsheet data online?
A: If it’s just raw data, go with CSV—it’s light and loads fast. If you want to keep formatting, PDF or XLSX are your best bets. Depends who you’re sharing with and how much you want them to fiddle with it.
Q: Why do some numbers change when I open a converted file?
A: Sometimes Excel auto-formats things weirdly—like turning long numbers into scientific notation. Try formatting cells as text before converting.
Q: Is there a limit on how many times I can convert?
A: No limits for basic use! Convert as many spreadsheets as you want—no strings attached.
Q: Can I convert spreadsheets without internet access?
A: Not with RunConvert—it’s a web-based tool. But if you need offline options, software like LibreOffice or Excel can do basic conversions.
Q: Can I convert password-protected Excel files?
A: You'll need to remove the password first. Conversion tools can’t peek inside locked files—privacy, remember?
Q: Is spreadsheet conversion free on RunConvert?
A: Totally free. No hidden fees or credit cards—just a clean, simple conversion experience.
What is XLS (Excel Spreadsheet)?
XLS (Excel Spreadsheet) is a proprietary file format developed by Microsoft for storing spreadsheet data, including rows, columns, and data cells. The format supports complex data like formulas, charts, and formatting.
XLS files are widely used for business, academic, and personal tasks requiring advanced data analysis, visualization, and reporting.
How to open XLS?
XLS files can be opened using spreadsheet programs like Microsoft Excel, LibreOffice Calc, or Google Sheets. These programs display data in a tabular format, preserving the cell structures, formulas, and formatting.
To open XLS files in Excel or Google Sheets, simply double-click the file or import it into the application.
XLS is Developed by: Microsoft
XLS was Released on: 1985
Useful Links for XLS:
How to convert XLS?
You can convert XLS files to other formats, such as CSV, JSON, or PDF, using online file converters or within spreadsheet programs. Simply upload your XLS file and select the desired output format.
In Microsoft Excel or LibreOffice, you can also save your XLS files in various other formats, like CSV or PDF, for compatibility with different applications.
What is CSV (Comma-Separated Values)?
CSV (Comma-Separated Values) is a simple text-based file format used for storing tabular data, such as spreadsheets or databases. Each line of a CSV file represents a row, and each value within a row is separated by a comma.
CSV files are commonly used for data exchange between different applications and are easily opened and edited by spreadsheet programs like Microsoft Excel, Google Sheets, and other data processing tools.
How to open CSV?
CSV files can be opened using spreadsheet programs such as Microsoft Excel, Google Sheets, or LibreOffice Calc. You can also open them using text editors like Notepad or Sublime Text, although they won't display the data in a table format.
To open CSV files in Excel or Google Sheets, simply double-click the file or import it into the application.
CSV is Developed by: International Organization for Standardization (ISO)
CSV was Released on: 1983
Useful Links for CSV:
How to convert CSV?
You can convert CSV files to other formats, such as Excel (.xlsx), JSON, or TSV (Tab-Separated Values), using online file converters. Simply upload your CSV file, choose the desired output format, and let the converter do the work.
Many spreadsheet applications like Excel also allow saving CSV files in various formats for easier use across different platforms and applications.
What Our Users Say
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Saved me hours of work
I had to convert multiple PDFs to Word for editing. This tool made it so easy and preserved all the formatting perfectly. The batch processing feature is a game changer.
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