Calculator Tools/Age Calculator
Age Calculator
Calculate international and Korean age
Enter Birth Date
Age Calculation Result
Select birth date
Age Calculator Guide
Learn how to calculate age in different formats
What is Age Calculator?
The Age Calculator calculates your exact age from your birth date. It shows international age (completed years), Korean age (traditional system, now abolished), year age, detailed breakdown, days lived, and countdown to your next birthday.
How to Use
- Enter your birth date using the date picker
- Optionally change the target date (defaults to today)
- View your age in multiple formats instantly
- Check additional info like days lived and next birthday
Practical Tips
- Use target date to calculate age at a specific point in time
- Korean age (traditional) was officially abolished in 2023
- Great for verifying age requirements or milestone birthdays
Accuracy & Limitations
Calculations account for leap years and varying month lengths. International age counts completed years from birth date. All processing happens locally in your browser.
Frequently Asked Questions
What's the difference between international and Korean age?
International age counts completed years since birth - you turn 1 on your first birthday. Korean age (traditional, now abolished since 2023) counted everyone as 1 at birth and added a year every New Year's Day. Year age simply subtracts birth year from current year.
Why is the Korean age system shown even though it's abolished?
While South Korea officially abolished the Korean age system in June 2023, it's still commonly referenced in daily conversations and cultural contexts. We include it for reference and historical comparison, with a note that it's the traditional system.
How is 'days until birthday' calculated?
The calculator finds your next birthday based on the target date, then counts the days between. If your birthday has already passed this year relative to the target date, it counts days until your birthday next year.
Can I calculate age at a specific date in the past?
Yes, use the Target Date field to set any date you want. This is useful for determining age at a specific event, calculating retirement eligibility at a future date, or verifying age requirements at a past date.
Why does the detailed age show months and days?
Detailed age (X years, Y months, Z days) shows your exact age with full precision. This is useful when exact age matters, such as for infant development milestones, insurance purposes, or legal age requirements that consider months.