The love calculator is very simple. All you have to do is enter your name and your partner's name and press the calculate button. It will show you the love percentage or compatibility percentage between you two. Spelling is also important, so make sure you spell your partner's name exactly the way they spell it. Notes. Like the other love calculators here, it is algorithmic and should only be used as a source of entertainment or simply to impress your partner with your soul mate. It is always advisable to follow your heart and not the results shown by a calculator, especially when it comes to an important decision such as finding the love of your life.