About this Age Calculator
Birthdays only come once a year, but your exact age changes every day. This calculator compares your date of birth with today (or any target date) and breaks the difference down into years, months and days, plus the total number of days you have been alive.
It correctly handles leap years and months of different lengths, so the result matches official age reckoning. Parents use it to track a baby's age in months, HR departments use it for eligibility checks, and everyone else uses it out of curiosity โ all without signing up.