Korean Age Calculator
Calculate your Korean age using the traditional East Asian age reckoning system where you are 1 year old at birth. Free, instant Korean age calculation using traditional East Asian age reckoning.
Note: Korea Changed to International Age System
As of June 2023, South Korea officially adopted the international age system for legal and administrative purposes. However, the traditional Korean age system is still culturally significant and used in some social contexts.
Enter your date of birth to calculate your Korean age
How to Use Korean Age Calculator
Enter Birth Date
Select your date of birth using the date picker. The calculator works for any birth date.
See Both Ages
View your international (standard) age and Korean age side by side to understand the difference.
Understand the System
Read the explanation to learn why Korean age differs from international age and how the traditional system works.
Why Use Our Korean Age Calculator?
Traditional System
Calculate your age using the traditional East Asian age reckoning system still used in some Korean social contexts.
Clear Comparison
See both your international age and Korean age side-by-side with clear explanations of the difference.
Cultural Context
Learn about the Korean age system and understand why it differs from the international standard.
Instant Results
Get immediate calculations as soon as you enter your birth date. No waiting or page refreshes.
Private & Secure
All calculations happen in your browser. Your birth date is never sent to any server or stored anywhere.
100% Free
No ads, no hidden costs, no signup required. Unlimited Korean age calculations forever.
Frequently Asked Questions
What is Korean age?
Korean age (λ§ λμ΄ - man nai) is a traditional East Asian age reckoning system where everyone is considered 1 year old at birth, and everyone ages by one year on January 1st, regardless of their actual birthday. This means a baby born on December 31st would be considered 2 years old the very next day.
Why is Korean age different from international age?
The Korean age system counts the time in the womb as part of your age (hence starting at 1), and uses the calendar year rather than birthdays to increment age. This reflects traditional East Asian concepts of age and time that differ from Western conventions.
Does South Korea still use the Korean age system?
As of June 2023, South Korea officially adopted the international age system for all legal and administrative purposes. However, the traditional Korean age system is still used in some social contexts and remains culturally significant, especially among older generations.
How much older is my Korean age?
Your Korean age is typically 1-2 years older than your international age. It's 1 year older if you've already had your birthday this year, and 2 years older if your birthday hasn't happened yet this year. A person born on December 31st will be 2 Korean years older than their international age on January 1st.
What is "year age" (counting age)?
Year age (μΈλ λμ΄ - counting age) is a simpler calculation: current year minus birth year. This gives a number between your international age and Korean age. It's sometimes used in Korea for things like school enrollment and military service eligibility.
Do other countries use this age system?
Similar traditional age reckoning systems have been used historically in China, Japan, Vietnam, and other East Asian countries. However, most of these countries have now adopted the international age system for official purposes, with South Korea being one of the last to make the change.
When should I use Korean age vs international age?
Use international age for all official, legal, and administrative purposes in South Korea (since 2023). Korean age may still come up in casual social situations, traditional ceremonies, or when speaking with older generations who are accustomed to the traditional system.
Is Korean age the same as "East Asian age reckoning"?
Yes, Korean age is part of the traditional East Asian age reckoning system that was historically used across East Asia. The specific term "Korean age" became common because South Korea continued using this system officially longer than most other countries.