Korean age comparison
Compare full age, calendar age, and traditional Korean counting age on the same date.
Your inputs
Choose your dates and the calculation convention. Results update as you edit.
Calculations run in your browser. Inputs are not saved or sent to analytics.
Your result
Complete the inputs to see your result.
How it works
- Full age (만 나이): Completed years
- Calendar age (연 나이) = Age on this date (Year) − Date of birth (Year)
- Traditional counting age (세는 나이) = Calendar age (연 나이) + 1
Assumptions and limitations
Civil dates use the proleptic Gregorian calendar, years 1–9999. Whole years use anniversaries, then up to 11 completed months and remaining days; month ends are clamped. A February 29 birthday in a non-leap year uses your selected February 28 or March 1 convention. Dates stay in your browser.
Sources
- Korea.net — Full, calendar, and counting age Sources reviewed: 2026-10-05
- Ministry of Government Legislation — Full-age reform and exceptions Sources reviewed: 2026-10-05
