Free Online Excel (XLS) to Excel (XLSX) Converter
Instantly convert your Excel (XLS) documents to Excel (XLSX) format. 100% free, secure, and works on any device.
Upload Excel (XLS) File
Select a single file
Max size: 200MB
How to convert Excel (XLS) to Excel (XLSX) online
Follow these three simple steps to convert your files.
Upload Excel (XLS)
Drag and drop your Excel (XLS) directly onto the upload area.
Convert to Excel (XLSX)
Our system will automatically start the Excel (XLSX) conversion process.
Download File
Download your freshly converted Excel (XLSX) file immediately after completion.
Why convert Excel (XLS) to Excel (XLSX)?
There are many reasons to switch from Excel (XLS) to Excel (XLSX). Often, Excel (XLSX) provides better support for web applications or reduces file size without losing quality. Use our free tool to effortlessly transform your Excel (XLS) documents into Excel (XLSX) in seconds.
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