Age Calculator – Calculate Exact Age from Date of Birth
How old am I exactly? Calculate your age in years, months, weeks, and days. Find the age difference between two dates.
Age Calculator – Calculate Exact Age from Date of Birth
Introduction
"How old are you?" usually gets a simple answer like "30." But sometimes you need to know: "30 years, 4 months, and 12 days."
The Age Calculator determines your precise chronological age based on your Date of Birth (DOB).
How We Calculate Age
It's tricker than .
- Current Year - Birth Year gives the tentative turning age.
- If the current month/day is before your birthday, subtract 1 from the year.
- Calculate remaining months and days accounting for varying month lengths (28, 30, 31).
Fun Age Facts
If you are 30 years old:
- You have been alive for ~10,950 days.
- You have slept for ~10 years.
- Your heart has beaten ~1.1 billion times.
Common Uses
- School Age: determining grade eligibility (cutoff dates).
- Legal Milestones: Driving (16), Voting (18), Drinking (21), Renting Car (25), Retirement (65+).
- Relationship Age Gaps: "Half your age plus seven" rule.
"Korean Age" vs International Age
Note that in South Korea (traditionally), you were 1 year old at birth and gained a year every New Year. However, as of June 2023, South Korea officially adopted the international standard (starting at 0), so this calculator now works worldwide!
FAQ
Q: What if I was born on a Leap Day (Feb 29)? A: In non-leap years, your legal birthday is typically March 1st.
Q: How do I calculate the age difference between me and my partner? A: Subtract the two dates. Note that only the year difference is often misleading (e.g., Dec 31, 1990 vs Jan 1, 1990 is same year but 1 year apart).
Conclusion
Time flies. Whether you are counting down to a 21st birthday or calculating months for a baby, precision matters.