Born in 1945: Korean age in 2026

Someone born in 1945 is 81 in international age after their birthday in 2026 and 80 before it. In the old Korean counting age they would be 82, and their year age is 81. Korean law has long counted age in full years, and amendments effective June 28, 2023 made international age the explicit default in civil and administrative matters, so 81 (or 80 before the birthday) is the age that counts on paper. 1945 was the Year of the Rooster (닭띠) — though a birthday before Seollal (February 13, 1945) is sometimes counted as the Monkey, the sign of 1944.

Three ways to count the age of someone born in 1945

Method	How it is counted	Age in 2026
International age (만 나이, man-nai)	0 at birth, +1 on each birthday. The explicit legal default since the June 28, 2023 amendments.	80 before birthday, 81 after
Year age (연 나이, yeon-nai)	2026 − 1945. Same for everyone born in 1945, birthday ignored.	81
Old Korean age (세는 나이, se-neun nai)	2026 − 1945 + 1. 1 at birth, +1 every January 1.	82

Counting from November 12, 2026: a person born in 1945 whose birthday falls between January 1 and November 12 has already turned 81 this year, and one born later in the year is still 80. When fans online say "Korean age", they usually mean the old counting age (82 here), which runs one or two years ahead of international age. For an exact answer on a specific date, enter the full birth date in the international age calculator.

Age of someone born in 1945, 2026–2030

Year	International age before birthday	International age after birthday	Year age	Old Korean age
2026	80	81	81	82
2027	81	82	82	83
2028	82	83	83	84
2029	83	84	84	85
2030	84	85	85	86

The old Korean age and year age go up together on January 1, while international age goes up on the birthday itself. That is why, between New Year and the birthday, the old Korean age is two years ahead of international age (82 vs 80 in 2026), and only one year ahead after the birthday.

Korean zodiac for 1945: Rooster

In the 60-year sexagenary cycle, 1945 is the Euryu year (을유년), the year of the Wood Rooster. Koreans call the animal sign 띠 (tti), so a person born in 1945 is "닭띠". The date on which the animal changes is not set by law; it is usually taken to be Seollal (설날), the lunar new year, while saju fortune-telling uses Ipchun (입춘) around February 4.

Seollal in 1945 fell on February 13 (may differ by one day because of the standard time used then). If you were born between January 1 and the day before that, you are sometimes counted as the Year of the Monkey (1944) instead. The same animal returns every 12 years, so people born in 1933 and 1957 share the Rooster sign. The next Year of the Rooster is 2029.

Milestones in Korea for people born in 1945

These years add the age set by Korean law to 1945. Early or delayed school entry, repeating a year or personal circumstances can change the real year, and where a system did not exist yet, the note says so.

Milestone	Year	As of 2026	Note
Elementary school entry	1952	Passed	The school-year start month and entry rules were different then, so the actual entry year may differ.
Year age 19: may buy alcohol and tobacco	1964	Passed	Under the current Youth Protection Act (청소년 보호법) rule, a person is a minor while "current year − birth year" is under 19, so everyone born in 1945 reaches this on January 1 regardless of birthday. This uses today's rule; the rule in 1964 may have been different.
Military service examination (men)	1964	Passed	Then called the conscription examination; the age rule at that time may have differed.
National Pension old-age pension starts (age 60)	2005	Passed	The starting age depends on birth year (60 to 65). At least 10 years of contributions are required.

How Korean law counts age, and which rules still use year age, is explained on the Korean age by birth year page.

Frequently asked questions

How old is someone born in 1945 in Korean age?

In 2026, the old Korean counting age (세는 나이) of someone born in 1945 is 82. Their international age, the explicit legal default in Korea since the June 28, 2023 amendments, is 80 before their birthday and 81 after it, and their year age is 81.

What is the Korean zodiac animal for 1945?

1945 is the Year of the Rooster (닭띠), the Euryu year (을유년) in the sexagenary cycle. Seollal in 1945 was on February 13, so if you were born before that date you are sometimes counted as the Monkey instead.

Is Korean age still used in Korea?

Not officially. Korean law has long counted age in full years, and amendments effective June 28, 2023 made international age the explicit default in civil and administrative matters unless a law says otherwise. Some laws still use year age (current year − birth year), such as the Youth Protection Act for alcohol and tobacco and the Military Service Act, and the old counting age survives only in casual conversation.

When can someone born in 1945 buy alcohol in Korea?

Under the current Youth Protection Act rule, a person is a minor while "current year − birth year" is under 19. Someone born in 1945 has a year age of 81 in 2026, so this rule no longer applies to them.

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Sources

This is a reference summary; official guidance from the relevant institution takes precedence. The lunar new year dates come from Korea Astronomy and Space Science Institute data; dates before 1962 may differ by one day because of the standard-time difference at the time.