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Free converter
Anyfile converts an Excel binary workbook to XLSX, ODS, CSV or TSV for free, right in your browser: the file is never uploaded. Drop it below and pick what it becomes.
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.xlsb
An Excel workbook saved in a binary form instead of XML. It keeps every workbook feature, macros included, but files are often smaller and open and save faster.
Very large workbooks where file size and loading speed matter.
Opens in Excel for Windows and Mac, LibreOffice Calc
About XLSB filesXLSX, ODS, CSV or TSV. Drop it on this page and choose, or pick one below.
No. Anyfile converts them in your browser, on your device; nothing is sent to a server.
Yes. Drop them together and pick a format: they all convert, and you get one ZIP.