Date Tools
Age Calculator
Calculate your international age (Western) and Korean age from your date of birth. Shows days until your next birthday.
Birth Date
Result
Age will appear here.
How to Use
- Enter your birth date.
- Your international age, Korean age, and days until your next birthday are calculated instantly.
Calculation Method
International age (만 나이) increases by one on each birthday: Today's year − Birth year, minus one if this year's birthday has not occurred yet. Korean age (세는 나이) — used informally in everyday Korean conversation prior to a 2023 legal standardization — counts everyone as age 1 at birth and adds one year on January 1st, regardless of birth date: Current year − Birth year + 1.
Common Uses
- Determining your legal/international age for official forms.
- Understanding the traditional Korean age often used in casual conversation.
- Counting down the days to your next birthday.
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