What is the age calculation?

1, usually even if you were born in 1 year, whether you were born in 1 or 65438+February, you will increase 1 year every new year.

2. In addition, in some places in China, the age is generally calculated according to the lunar calendar, but in some places it is calculated according to the Gregorian calendar.

3. Specifically, the person born at the end of February, 65438+, was born only a few days ago, and after the Gregorian calendar of 65438+ 10/,is considered to be nominal age. This method is more practical.

4. If you want to calculate the accurate age, it refers to the number of days from the date of birth to the date of calculation, so the statistical calculation is complicated, but it can reflect the actual survival time.

Calculation of one-year-old age

One-year-old age is related to birthday. One-year-old age, also known as full-time age, refers to the number of anniversaries or birthdays experienced from birth to counting. The age calculation formula of one-year-old birth date is: one year old = this year-year of birth (birthday has passed) (-65438+ birthday has not passed is 0). One-year-old age is often 1 ~ 2 years younger than the nominal age, which is a commonly used age calculation method in population statistics.

Born at the age of 1 -0, the annual Gregorian birthday is 1 year. For example, a baby born on February 5, 20 18+ 19 is 2 years old in the nominal year. In fact, it's only been more than six months, and he hasn't celebrated his birthday yet. He should be under 1 year old, that is, 0 years old.