Age Calculator
Set a date of birth to see your exact age, a countdown to your next birthday, and totals in days, weeks and hours.
What does an age calculator do?
An age calculator takes a date of birth and works out exactly how much time has passed since then — broken down in whichever unit is useful: years, months and days for an exact age, or a running total in days, weeks and hours for a more granular view.
How exact age is calculated
The calculation compares your date of birth to today's date and counts the full years, then the full months remaining after those years, then the full days remaining after those months — which is why exact age isn't just "today's year minus birth year," it also depends on whether your birthday has happened yet this year.
How SmartCalc helps
Set a date of birth in SmartCalc's Age Calculator and it shows three things at once: a Life Timer with your exact age in years, months and days; a birthday countdown showing days until your next birthday; and total milestones — the same span expressed in total days, weeks and hours. All of it updates instantly and works without a connection.
What Age Calculator in SmartCalc needs from you
You enter
- —Date of birth
SmartCalc shows
- →Life Timer (years/months/days)
- →Birthday countdown
- →Total days, weeks & hours