DEF LIB
File conversion

Convert DEF to LIB

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Is it possible to convert DEF to LIB?
Yes - DEF converts to LIB.

Not a file-to-file 'conversion' but a real, common operation: generate an import library from a .def with the MSVC LIB tool - lib /DEF:name.def /OUT:name.lib (add /MACHINE). MinGW's dlltool does the equivalent. The .def describes exports; the .lib lets other code link against the DLL.

Also to LIB: BXL · A

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Tested on macOS, Windows & Linux
Last verified Oct 2026

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How to convert DEF to LIB

Converting a .DEF file to .LIB lets you open the content in software that prefers the .LIB format, though some details may change compared with the original. We are still putting together the list of programs that handle .DEF files.

A full step-by-step guide for this conversion is on the way; the information above is drawn straight from our database.

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