To calculate the five elements through the birth date, you can follow the following steps: 1. First, convert the year, month, day, and hour of birth in the Gregorian calendar to the year, month, day, and hour of the lunar calendar. You can use a lunar calendar converter or a birthday and horoscope query tool on the Internet to convert. 2. Determine the heavenly stems and earthly branches of the year of birth. According to the heavenly stems and earthly branches of the horoscope, a person's life palace (i.e., the sun pillar of the horoscope) can be determined. 3. According to the corresponding elements of the earthly branches of the life palace in the five elements table, the five elements of a person's life can be determined. For example, if the earth branch of the life palace is Zi, the corresponding element is water. 4. Based on the corresponding elements of the heavenly stems and earthly branches of other eight characters, combined with the elements of the life palace, the other four pillars and five elements of the person can be inferred. According to the relationship between the five elements, the strengths and weaknesses of the five elements can be determined. It should be noted that the calculation of the five elements through the birth date and horoscope is only to infer the numerology of the five elements of a person based on the birth date and horoscope of the person. It is only an aspect of the person's numerology and cannot fully represent the actual situation of the person. If you want to have a deeper understanding of your five-element numerology, you can consult a professional numerologist.