In certain cases, age calculations can be slightly ambiguous, especially when months have different lengths. For instance, from February 20 to March 20 is clearly one month, but calculating from February 28 to March 31 could be interpreted in two ways. If counted from February 28 to March 28, it’s one month and three days. If both February 28 and March 31 are considered month-end dates, it’s simply one month. Our calculator follows the first method for consistency.

Age Calculator

The Age Calculator determines the time difference between two dates, displaying the result in years, months, weeks, days, hours, minutes, and seconds. It follows the most common age system, where age increases on a person’s birthday. For example, someone who is 3 years and 11 months old will turn 4 on their next birthday. This system is widely used in Western countries.

However, different cultures count age differently. In some traditions, age includes the current year, meaning a 20-year-old may be considered in their 21st year of life. The traditional Chinese age system, for instance, starts at 1 at birth, with age increasing at the Chinese New Year rather than on birthdays. A baby born one day before the Chinese New Year would be considered 2 years old just two days later.

In certain cases, age calculations can be slightly ambiguous, especially when months have different lengths. For instance, from February 20 to March 20 is clearly one month, but calculating from February 28 to March 31 could be interpreted in two ways. If counted from February 28 to March 28, it’s one month and three days. If both February 28 and March 31 are considered month-end dates, it’s simply one month. Our calculator follows the first method for consistency.