🎂Age Calculator (Western + Korean/Traditional)
Enter your birth date and see Western (international) age, Korean counting age, and yeonnai (year age) at once. Reflects Korea's June 2023 standardization to international age. Useful for paperwork, medical prescriptions, insurance, job applications, and confirming legal age for alcohol or tobacco.
How to use
- 1Pick your birth date.
- 2Pick a reference date (usually today).
- 3All three ages calculate automatically.
FAQ
What is 'man-nai' (Korean Western age)?+
Age counted by birthday. You're 0 at birth and add 1 each birthday. Since June 2023, this is the official legal age in Korea.
What about 'sae-nai' (counting age)?+
The traditional Korean count — you're 1 at birth and everyone adds 1 each January 1st. Fading after the 2023 standardization.
What's 'yeon-nai' (year age)?+
Current year − birth year. Ignores birthday. Used in some Korean laws like the Drinking Act and Youth Protection Act.
Which age applies to military duty and national pension?+
Military duty uses year age (birth-year based); national pension and basic pension use Western age. Confusing — check carefully.
How does this affect workplace titles?+
Legally it's Western age but everyday conversation and seniority still often follow counting age. The shift will take time.
What's the retirement age?+
Legally 60 (Western age) in Korea, though company rules may vary.