XLSX to CSV Converter
Free online tool to convert XLSX 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 1GB
How It Works
How to Convert XLSX to CSV
Click inside the file drop area to upload your XLSX file or drag & drop it.
Locate your XLSX file on your device—typically used for various purposes. Ensure the file is under 50MB to avoid upload issues. If the upload fails, check your internet connection or try compressing the file first.
Select CSV as the output format and click the 'Convert' button.
Choose CSV based on your needs—different formats suit different purposes, like JPEG for smaller file sizes. The conversion process typically takes a few seconds, depending on file size and server load.
Download the converted CSV file instantly after conversion.
Once the conversion is complete, click the download link to save your CSV file. You can then open it in software like a compatible viewer. If the file doesn’t download, ensure your browser allows pop-ups from RunConvert.
You can also send a link to the converted file via email. (Optional)
Enter an email address to receive a secure link to your converted file, which is useful for sharing with clients or accessing later. Links expire after 24 hours for security, and RunConvert ensures your data is protected during transmission.
Convert Your XLSX files to other formats
RunConvert.com can convert your XLSX files to these other formats:
Convert Your XLSX files to other formats
Convert Files to XLSX Format
RunConvert.com supports these converters to XLSX format:
Convert Files to XLSX Format
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Frequently Asked Questions
Here are some common questions and answers about xlsx and csv file conversions asked by our users on RunConvert.com.
Frequently Asked Questions
Q: What’s the best format to convert XLSX to for sharing?
A: PDF is great for sharing spreadsheets. It’s universal and keeps your data intact. RunConvert.com makes the switch seamless.
Q: Why does my converted XLSX look different?
A: Some fonts or formulas might not carry over perfectly. It’s like wearing a suit tailored for someone else. RunConvert.com does its best, but using standard fonts helps.
Q: Can RunConvert.com handle large CSV files?
A: You got it! RunConvert.com can manage most CSV sizes, though huge ones might take a moment. It’s like mailing a big package—it’ll get there, just give it a sec.
Q: Is it safe to upload CSV files to RunConvert.com?
A: Totally safe. RunConvert.com uses top-tier encryption, like a digital vault for your data. Your numbers and notes are secure with us.
Q: What is spreadsheet file conversion?
A: It's basically changing one spreadsheet format into another—like turning an Excel file (.xlsx) into a CSV, PDF, or Google Sheets. Think of it like translating a document into another language, but for software.
Q: Can I open a converted CSV on Google Sheets?
A: Of course! Just drag and drop the file into Google Drive and open with Sheets. Works like a charm.
Q: Can I convert XLSX to CSV?
A: Absolutely! XLSX to CSV is one of the most common conversions. Whether you're prepping data for coding or uploading it into a platform, a CSV keeps things clean and simple.
Q: Will frozen panes or headers stay after conversion?
A: Only in XLSX or ODS. PDF will lock the view, but CSV loses frozen rows and columns entirely.
Q: What happens to merged cells during conversion?
A: Merged cells usually keep their formatting in XLSX and ODS. In CSV though? They’ll get split into separate cells.
Q: How do I know if the converted file is accurate?
A: We recommend opening and scanning the result before sharing. Most conversions are spot-on, but it’s good to double-check!
What is XLSX (Excel Spreadsheet)?
XLSX (Excel Spreadsheet) is a file format used by Microsoft Excel to store spreadsheets. It is a more modern and efficient version of the older XLS format and is based on XML (Extensible Markup Language).
XLSX files can store multiple sheets, data tables, charts, graphs, and more complex data structures. This format is widely used for organizing, analyzing, and visualizing data.
How to open XLSX?
XLSX files can be opened using spreadsheet programs like Microsoft Excel, Google Sheets, LibreOffice Calc, and Apple Numbers. These applications fully support the features of XLSX files, such as multiple sheets, formulas, and charts.
To open XLSX files in Excel or Google Sheets, simply double-click the file or import it directly into the application.
XLSX is Developed by: Microsoft
XLSX was Released on: 2007
Useful Links for XLSX:
How to convert XLSX?
You can convert XLSX files to other formats, such as CSV, PDF, or JSON, using online file converters. Upload the XLSX file and choose the desired output format.
Many spreadsheet applications like Excel also allow saving XLSX files in other formats, enabling cross-platform compatibility.
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.
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