📅
Age Calculator
Calculate your international age and Korean age from your birthdate.
Type YYYYMMDD or YYYY-MM-DD directly
💡 How to Use
Pick a birthdate using the date picker or type it directly in YYYYMMDD format, and both international age and Korean age are calculated simultaneously. International (만나이) age follows the global standard — it increments on your birthday each year. Korean age starts at 1 at birth and adds a year every 1 January. The number of days until your next birthday is also shown, handy for planning birthday events. Use it to confirm your exact age for official documents or to check age eligibility for international services.
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FAQ
What's the difference between international and Korean age?▼
International age counts from birth, adding 1 each birthday. Korean age starts at 1 at birth and adds 1 every January 1st.
What is the 2023 Korean age reform?▼
Since June 28, 2023, Korea officially uses international age for all legal and administrative purposes.
Is the age on my ID different from my international age?▼
No. After the 2023 reform, all official documents including resident registration use international age.