Korean age calculator
Choose your date of birth. The calculator shows the three ways of counting age in Korea and explains the difference.
How to useHow old are you in Korea?
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Korean age calculator: what it is for
South Korea has three ways of counting age. In traditional Korean age, you are born 1 year old and get a year older every January 1. Year age is just the difference between the years. International age, official since June 2023, changes on your birthday.
The calculator shows the three ages side by side and a year-by-year chart that makes clear why Korean age is usually one or two years higher.
How to use
- Choose your date of birth.
- If you want, change the date of the calculation.
- See the three ages and compare them on the chart.
When to use it
- Understanding ages in K-dramas and K-pop.
- Travel, study and work in Korea.
- Curiosity about Korean culture.
Frequently asked questions
How does Korean age work?
In the traditional count (세는 나이, se-neun nai) a baby is 1 year old at birth and everyone gets one year older on January 1, not on their birthday. That is why a baby born on December 31 turns 2 the next day.
Does Korea still use Korean age?
Since June 28, 2023, South Korean law requires the international age (만 나이, man nai) in documents and contracts. The traditional age is still common in conversation, and the year age (연 나이) still applies to some rules, such as the legal drinking age and military service.
Is it really free?
Yes, 100% free. No sign-up, no subscription and no usage limits. All Tools123 are free.