Age Calculator
Calculate your exact age from your birthdate. See your age in years, months, days, hours, and minutes. Find out how many days until your next birthday!
Enter Your Birthdate
What is an Age Calculator?
An age calculator is a tool that calculates your exact age from your date of birth to the current date. It provides detailed information including years, months, days, hours, minutes, and even seconds you've been alive. Age calculators are useful for age verification, birthday planning, milestone tracking, and understanding your exact age in different time units.
How Age Calculation Works
The calculator compares your birthdate with today's date and calculates the difference:
- Years: Complete years you've lived since birth
- Months: Remaining months after counting complete years
- Days: Remaining days after counting complete months
- Total Time: Converts your entire age to months, weeks, days, hours, and minutes
Common Use Cases
- Age Verification: Verify minimum age requirements for services, websites, or legal purposes
- Birthday Planning: Count down days to your next birthday or milestone
- Retirement Planning: Calculate years until retirement age
- School Enrollment: Determine eligibility for school admission based on age cutoff dates
- Legal Purposes: Calculate age for legal contracts, voting, or driving licenses
- Relationships: Calculate age differences between people
- Milestone Tracking: Track important life milestones (18th, 21st, 50th birthdays)
- Health Records: Accurate age for medical records and insurance
- Genealogy: Calculate ages in family tree research
- Fun Facts: Discover how many days, hours, or minutes you've been alive
Age Milestones
Legal adulthood in most countries. Can vote, sign contracts, and get driver's license.
Legal drinking age in USA. Full adult status in many jurisdictions.
Approximately 10,950 days old. Major life milestone for many people.
Half a century! Golden anniversary milestone.
Traditional retirement age in many countries.
Centenarian! Approximately 36,500 days lived.
Interesting Age Facts
- At 10,000 days old, you're approximately 27.4 years
- At 1,000,000 hours old, you're approximately 114 years
- Average human lifespan is about 27,375 days (75 years)
- You blink approximately 415 million times in 30 years
- Your heart beats about 2.5 billion times in 70 years
- By age 75, you've spent about 25 years sleeping
- Leap years add an extra day every 4 years (except century years not divisible by 400)
Age in Different Cultures
Different cultures calculate age differently:
- Western Age: Count from 0 at birth, add 1 each birthday
- Korean Age: Born at age 1, add 1 every January 1st (not birthday)
- Chinese Age: Born at age 1, add 1 at Chinese New Year
- Lunar Age: Based on lunar calendar instead of solar calendar
Age Calculation Examples
Example 1: Born June 15, 1990
Age: 35 years, 6 months, 11 days
Total: ~12,977 days, ~311,448 hours, ~18,686,880 minutes
Example 2: Born January 1, 2000
Age: 25 years, 11 months, 25 days
Next Birthday: In 6 days (January 1, 2026)
Tips for Using the Age Calculator
- Enter your complete birthdate (day, month, year) for accurate results
- The calculator uses your device's current date and time
- Results update in real-time as you change the birthdate
- Leap years are automatically accounted for in the calculation
- You can calculate age for any date, not just your own birthday
- Use for calculating age differences between two people
- Great for planning milestone birthdays in advance
Frequently Asked Questions
How accurate is the age calculation?
The calculator is extremely accurate, calculating down to the exact day. It accounts for leap years and varying month lengths. The calculation is based on your device's current date.
Why does my age change throughout the day?
Your age in hours and minutes constantly changes. The calculator shows your age at the moment you calculate it. Your age in years, months, and days only changes on specific dates.
How do leap years affect age calculation?
Leap years add an extra day (February 29) every 4 years. If you're born on a leap day, you technically only have a "real" birthday every 4 years, but your age still increases annually.
Can I calculate someone else's age?
Yes! Simply enter any birthdate to calculate age. This is useful for calculating your child's age, planning milestone birthdays, or determining age differences.
Is my birthdate stored or sent to a server?
No, all calculations happen entirely in your browser using JavaScript. Your birthdate never leaves your device and is not stored anywhere.