Date Calculators
Age Calculator
Calculate your exact age in years, months, days, hours, minutes, and seconds. Find out how many days until your next birthday.
Frequently asked questions
How do you calculate exact age?
We compare the date of birth to the chosen date and break it down into years, months, days, and so on. Months are tricky because they have different lengths, so we use calendar-aware arithmetic.
Does this account for leap years?
Yes. The JavaScript Date object handles leap years automatically, so February 29 birthdays are calculated correctly.