In 2026, use international age for most official situations in Korea, including forms, contracts, hospitals, and government paperwork. Old "Korean age" is no longer the default legal standard, but year age may still matter for alcohol, school, youth protection, and military-related rules. If unsure, give your birth date rather than converting your age yourself.
Foreigners in Korea still hear three different age ideas: international age, Korean age, and year age. Korea changed the official standard in 2023, but older habits and a few rule-specific exceptions still create confusion.
Which age does Korea use now?
For most official purposes in 2026, Korea uses international age. That means you are 0 at birth and your age increases on your birthday.
Use this age for most forms, hospitals, contracts, bank paperwork, work documents, and government-style situations. If a form asks for your birth date, enter the date exactly as it appears on your passport or ARC.
Old Korean age is now mostly cultural. You may still hear it in conversation, but it should not be your default answer on official paperwork.
What was old Korean age?
Old Korean age counted a baby as 1 year old at birth and added another year every January 1. A baby born on December 31 could be called 2 years old the next day.
That is why Korean age was often one or two years higher than international age. It was not a birthday mistake; it was a different counting system.
What is year age?
Year age is not the same as old Korean age. It counts from 0 at birth, but everyone adds one year on January 1:
current year - birth year
In 2026, someone born in 2006 has a year age of 20, even before their birthday. Year age may still appear in alcohol, smoking, school, youth protection, and military-related rules. [NEEDS HUMAN FACT CHECK]
What age should foreigners say?
Use this rule:
1. Official forms and paperwork: international age.
2. Social conversation: international age first, birth year if needed.
3. Age-restricted or school/military contexts: check whether the rule uses year age.
If the answer affects eligibility, do not guess. Give your birth date and ask the office, school, shop, or institution which standard they use.
Korean Age Calculator - Enter your birth date once and compare international age, old Korean age, and year age side by side.
What if a Korean app asks for age?
For identity verification, banking, telecom, insurance, healthcare, school, and government forms, use your legal birth date. For casual profile fields, international age is usually the safest answer unless the app clearly says otherwise.
Frequently Asked Questions
Does Korea still use Korean age in 2026?
Not as the main official standard. Korea uses international age for most official purposes, but old Korean age can still appear casually.
What is my Korean age if I was born in 2000?
Under old Korean age, someone born in 2000 would usually be 27 in 2026. Your official international age still depends on whether your birthday has passed.
Is drinking age based on international age?
This needs official confirmation before publishing. Korea commonly uses birth-year logic for alcohol and smoking eligibility, but the current 2026 wording should be checked. [NEEDS HUMAN FACT CHECK]
Should I put Korean age on Korean forms?
No. Use your birth date or international age unless the form clearly asks for another standard.