Age Calculator
Calculate exact age in years, months, days, hours, and minutes from date of birth.
Age Calculator
Date of Birth
Get exact age in years, months, days, and more
Your Exact Age
Smart Insights
Personalized takeaways from your numbers.
Real-Life Examples
Jan 15, 1990
The Formula Behind It
Age = Current Date - Date of BirthVariables
- Age = End Date − Birth Date
How It Works
- Enter your date of birth.
- Optionally set an end date (defaults to today).
- View exact age in years, months, and days.
- See total days lived and next birthday countdown.
About Age Calculator
The Age Calculator computes your exact age down to years, months, and days — useful for official forms, eligibility checks, milestone celebrations, and curiosity. Unlike mental math, it correctly handles leap years and varying month lengths.
How Exact Age Is Calculated
Age is the difference between two dates, accounting for whether the current day has passed the birth day in the current month. If not, we borrow days from the previous month. Leap years add an extra day in February every four years (with century exceptions).
Common Use Cases
Verify eligibility for school admission, government schemes, insurance policies, retirement benefits, driving licenses, and sports age categories. Calculate how many days until a milestone birthday. Determine tenure for employment or membership duration between any two dates.
International Age Systems
This calculator uses international age (age at last birthday). Some cultures use East Asian traditional counting where a person is 1 at birth. For legal purposes, always confirm which system your jurisdiction requires.
Frequently Asked Questions
How is age calculated?
Age is the difference between the current date and date of birth, accounting for leap years.
Does the calculator account for leap years?
Yes. Our age calculator correctly handles leap years and varying month lengths.
Can I calculate age between any two dates?
Yes. Enter any start and end date to calculate the exact duration between them.
How do I calculate age in months for a baby?
Enter the birth date and today's date to get age in years, months, and days.
What timezone is used?
Calculations use your local browser timezone for the current date.
How is age used in legal contexts?
Legal age is typically calculated as completed years on the relevant date, which may differ from exact age.
Can I find what date I will be a certain age?
Add the desired years to your birth date to find when you'll reach that age.
How many days old am I?
Our calculator shows your exact age in days, hours, and minutes.
Is age calculated differently in Korea?
Korean age traditionally adds one year at birth and another on New Year's Day. Our calculator uses international age.
How to calculate age for forms?
Most forms require age as of a specific date. Use our calculator with that reference date.