Free online Excel Binary converter supporting multiple output formats. Files are processed locally in your browser — no uploads, 100% private.
Drop your .XLSB file here
or click to browse from your device
100% browser-based — no server uploads, no cloud processing
Free forever — no account or subscription required
Supports batch conversion for multiple files at once
Works on any device — desktop, tablet, and mobile
Results available in seconds — no server queue or wait time
Files are cleared immediately after processing for maximum privacy
Excel Open XML Binary workbook format
Powerful formula and data analysis capabilities
Supports charts, pivots, and conditional formatting
Universal compatibility with office suites
May require specific software to open or edit
Not universally compatible with all applications
Alternative formats may offer better compression or quality
Business reporting and data analysis
Financial modeling and budgeting
Data import/export pipelines
Project scheduling and tracking
Keep original files before converting for maximum flexibility
Test converted output before using in production workflows
Use batch processing for multiple files to save time
Match the output format to your delivery platform for best results
Drag & drop your file or click to browse
Files are processed instantly in your browser
Save your converted or processed file
Upload your XLSB file using the drop zone above. Select your target output format and the conversion happens instantly in your browser.
Completely safe. Our converter runs 100% in your browser — your XLSB file never leaves your device or touches any server.
Select your file to see all supported output formats for XLSB. Most popular formats in the same category are available.
Free, instant, and 100% private. Your files are processed locally in your browser.