The invention provides an application converting method and device and equipment. The method comprises the steps that a file of an application subprogram is obtained, wherein the application subprogram is an application program running depending on a master application program; according the file of the application subprogram, an executable file supporting running at a Web terminal is generated; according to the executable file and the second entry file supporting running at the Web terminal, a Web application file is generated, and the executable file is quoted in the second entry file. In the application converting method and device and the equipment, the technical scheme that the file of the application subprogram is converted into the file of the Web application is provided, so that the Web application with the functions identical to that of the application subprogram does not need to be developed separately, so that the labor and time cost required for developing the Web application is saved, the development efficiency is improved, the Web application and the application subprogram which are identical in function share the same set of basic source codes, and the code reuse rate is improved.