Open the application. Click the “+” to add a dfont, or simply drag the dfont from the Finder.
For your info, the system fonts are located at the directory “System/Library/Fonts“. Alternatively, you can search for the font in the Font Book application and right-click the font and select “Reveal in Finder”.
Next, select the destination folder and click “Convert“. You will now see a bunch of font files in your destination folder. Keep the one with the .ttf extension and delete the rest. Now move those ttf fonts to Windows and double-click on it to install. Note: DfontSplitter also comes with a Windows version. Alternatively, you can move the dfont to Windows and use DfontSplitter (Windows version)to convert the font to ttf format.
