Age Calculator
Find out exactly how old you are in years, months, days, and even hours! Perfect for birthdays, anniversaries, or just satisfying your curiosity.
Enter Your Birth Date
Understanding Age Calculation
Our calculator uses precise date mathematics to account for:
- Varying month lengths (28-31 days)
- Leap years (including century rules)
- Time zone adjustments
- Different calendar systems
Why This Matters
Simple year subtraction (current year - birth year) often gives incorrect results because:
- It doesn't account for whether your birthday has passed this year
- February birthdays in non-leap years create inaccuracies
- Month lengths vary significantly
Frequently Asked Questions
Why does my age change at midnight?
Your age increases on your birthday's anniversary date, not at the exact time you were born. However, our calculator can show hours/minutes if you need precise timing for legal or scientific purposes.
How do leap years affect my age?
If you were born on February 29th:
- In non-leap years, your birthday is considered March 1st legally
- You age at the same rate as everyone else
- Your "leap age" (actual birthdays celebrated) would be 1/4 of your chronological age
What's the most common birthday?
In the United States, September birthdays are most common (conception during holiday season). The least common birthday is February 29th, followed by Christmas Day and New Year's Day.
Legal Disclaimer
This calculator provides general information only. For legal age verification (alcohol, voting, retirement), always consult official documents and local laws which may have specific cutoff times.