Some people think that all they need to do to find out their age is take their birth year away from the current year. However, an age tool is more accurate. What is the real reason you need to be so exact?
Official Documentation
On many government forms, like those for passports, visas, driver's licenses, and school applications, you need to swear that you are the right age. Not getting what you want or having your application held up could happen if you give the wrong age.
Health and Medical Uses
Age is a very important thing in health care. Doctors look at a patient's age to figure out how much medicine to give them, what diseases are more likely to happen with age, and if the patient can get certain shots or tests for their health. Age tools can be very helpful for people who are taking care of newborns and need to know their exact age in weeks and days to keep an eye on their growth.
:
