Enter a date of birth to see the exact age in years, months and days, and how long until the next birthday.
The calculator counts full years from the birth date, then the full months left over, then the remaining days. Leap years are handled, and someone born on February 29 turns a year older on March 1 in non-leap years. The second date defaults to today; change it to find out how old someone was (or will be) on any day.
How many days old am I? Enter your birthday above and the total days is shown in the box. A 30-year-old has lived roughly 10,957 days.
How many weeks are in a year? 52.18 on average. See your whole life as a grid on the life in weeks calculator.
Is my birthday date stored? No. Everything runs in your browser and only goes into the address if you copy the shareable link.
More: days between two dates · all date calculators · countdowns