Age Calculator - Calculate Your Exact Age
Calculate your age in years, months, days, hours, minutes, and seconds. Find out how old you are, when you'll turn a specific age, or calculate age difference between two people. Free and accurate.
Your Age in Different Units
Age Milestones
How to Use Age Calculator
Calculate your exact age in 3 simple steps:
Enter Birth Date
Select your date of birth from the calendar picker. The calculator accepts any date from the past 150 years.
Choose Target Date
Select the date to calculate age on. Default is today. Use "Next Birthday" button to see age on your next birthday.
View Results
See your age in years, months, days, hours, minutes, and seconds. Plus upcoming milestones and next birthday countdown.
Interesting Age Facts
Average Human Lifespan
The global average life expectancy is around 73 years, though it varies significantly by country. Japan has the highest at 85 years.
Your Heart Has Beaten
If you're 30 years old, your heart has beaten approximately 1.1 billion times! The average heart beats 70-80 times per minute.
Days You've Slept
If you're 25 and sleep 8 hours daily, you've slept for about 3,042 days - that's 8.3 years of your life spent sleeping!
Birthday Probability
In a room of just 23 people, there's a 50% chance two people share the same birthday! With 70 people, it's 99.9%.
Cell Regeneration
Your body completely replaces itself every 7-10 years. You're literally not the same person you were a decade ago!
Age in Dog Years
The "1 dog year = 7 human years" is a myth. A 1-year-old dog is actually equivalent to a 30-year-old human!
Why Use Our Age Calculator?
Instant Results
Calculate your exact age instantly in years, months, days, hours, minutes, and seconds. Real-time updates as you change dates.
100% Accurate
Uses precise date calculations accounting for leap years, different month lengths, and all calendar variations.
Multiple Formats
View age in years, months, weeks, days, hours, minutes, and seconds. See which format makes most sense for you.
Birthday Countdown
See exactly when your next birthday is and how many days left. Plan celebrations in advance!
Age Milestones
Discover upcoming age milestones like 10,000 days old, 500 months old, or 1 billion seconds old!
Mobile Friendly
Calculate age on any device - phone, tablet, or computer. Works perfectly everywhere.
Frequently Asked Questions
How is age calculated accurately?
Age is calculated by finding the difference between your birth date and target date, accounting for leap years, varying month lengths, and calendar adjustments. We calculate years, then remaining months, then remaining days for exact age.
What if I was born on a leap day (February 29)?
If you were born on February 29, your birthday is celebrated on February 28 or March 1 in non-leap years. Our calculator accurately handles leap year birthdays and shows when your actual birthday occurs.
Can I calculate age between two specific dates?
Yes! Enter any birth date and select any target date. Calculate age on past dates, future dates, or specific milestones. Great for planning or historical calculations.
How many days old am I?
Our calculator shows your exact age in days in the breakdown section. For example, a 30-year-old is approximately 10,950 days old (accounting for leap years). Check your total days in the results.
What day of the week was I born?
Our calculator automatically shows which day of the week you were born (Monday, Tuesday, etc.). This is calculated using the Gregorian calendar and accounting for all historical date adjustments.
When will I turn 10,000 days old?
Check the "Age Milestones" section to see upcoming special age milestones including 10,000 days, 500 months, 1 billion seconds, and more. These make fun celebration dates!
How to calculate age difference between two people?
Calculate each person's age separately using their birth dates, then subtract. Or enter one person's birth date and set target date to the other person's birth date to see exact difference.
Is the age calculation accurate for all countries?
Yes! Our calculator uses the Gregorian calendar which is the international standard. Age is calculated the same way worldwide, though some cultures celebrate age differently (like Korean age).