TW-Physik can be used for easy solving of physical calculations. After chosing the category and the searched value, the input of the given values is enough to start calculation immediately. The given main formula will automatically be converted. The result can be saved for further calculations and can be printed. TW-Physik also includes a unit converter for different measuring units of currently 9 categories. Beside units of the SI norm there are also country-specific (e.g. US and UK) and antique units available. As further feature the program also includes truth tables of different categories like densities of materials, coefficients of expansion, specific gas constants, and much more.