The age calculation tool can not only use the specified date as the date of birth, calculate the constellation and zodiac sign, but also automatically calculate the age up to the current date or other dates.
Example: Born on January 1, 1990, how old is the age on October 1, 2021?
1. Set the date of birth whose age needs to be queried
2. Set the current date
3. After choosing the calculation, you can get that the birth date is January 1, 1990, and the age is 31 years old by October 1, 2021.