Excel to XLSX Converter — Free Online Tool
Convert Excel files to XLSX format online for free. Upload your .xls/.xlsx file and get a clean .xlsx result in seconds. No software to install, no account required.
Convert in Three Steps
The whole process takes under a minute, even for large files.
Upload your file
Drag and drop or click to browse. SQL, SQLite, CSV and JSON files up to 50 MB are accepted.
Pick your target
Select the output format. The source format is detected automatically from your file.
Download the result
Your converted file is ready in seconds. Import it directly into your database.
Every Syntax Difference Handled Automatically
Excel is the most widely used tool for data analysis and reporting. Converting Excel to XLSX gives you a professionally formatted spreadsheet with bold headers and auto-sized columns, ready to open in Microsoft Excel, Google Sheets, or LibreOffice Calc.
Each table in your .xls/.xlsx file becomes a separate worksheet, making it easy to navigate and analyze your data.
Related Conversions
Other conversions you might need alongside Excel to XLSX.
Common Questions
Yes. Each table becomes a separate worksheet.
Yes. Headers are bold and columns are auto-sized.
XLSX format (Excel 2007+).
Ready to Convert Your Excel to XLSX File?
Upload your file above and get a converted result in under a minute. No account, no cost, no catch.