• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
South Korea

South Korea is officially making everyone a year (or two) younger starting June 2023

Sophie Mellor
By
Sophie Mellor
Sophie Mellor
Down Arrow Button Icon
Sophie Mellor
By
Sophie Mellor
Sophie Mellor
Down Arrow Button Icon
December 9, 2022, 7:52 AM ET
Korean age
South Korea is dropping its traditional method of calculating age, making everyone a year or two youngerGetty Images

South Korea is adopting the international standard of counting age, making everyone at least one year younger starting next year.

The traditional Korean method of counting ages deems children one year old from the moment they are born and adds another year each New Year’s Day or Jan. 1 — instead of the day they are born like in the West.

For purposes such as military conscription or the legal drinking age – otherwise known as the Calendar age – Koreans use the same method but deem the child zero at birth. Meanwhile, the South Korean medical system adopted the international mode of calculating age in the 1960s, counting from zero at birth and adding a year on every birthday.

In action, this means that a child born on Dec. 31 in the U.S. and South Korea will be two years apart in age by Jan. 1. It also means that to their parents, their army officer, and their doctor, they may have three different ages.

But starting in June 2023, the traditional method of counting age will be officially scrapped across all “judicial and administrative areas,” and new laws will come into place stipulating that only the international method of counting ages will be used.

“The state and local governments shall encourage citizens to use their ‘international age’ and conduct necessary promotion for that,” the bill says on the parliament website.

“The revision is aimed at reducing unnecessary socio-economic costs because legal and social disputes, as well as confusion, persist due to the different ways of calculating age,” Yoo Sang-bum of the ruling People Power party told parliament.

Who wouldn’t want to be a year or two younger?

The system is a remnant of the Chinese way of calculating age centered around the Lunar new year. In pre-modern times, Chinese societies calculated age by adding one year at birth and then a year for how many Lunar years have passed. There is a theory that the concept began at a time when there were no regular calendars, so people would often ignore the day of their birth and simply add a whole year on the first day of the lunar calendar of the Spring festival.

In the context of a child’s horoscope, this method is still considered relevant throughout life in many Chinese societies around the world.

But while China has largely stopped using this method of calculating ages on legal documents, the tradition has stayed alive in Korea and Taiwan. (Japan also calculated age this way until 1902, when a law was passed to convert to the modern age system.)

Korea adopted Jan. 1 as the day an additional year was added, as the country began observing the Gregorian calendar in 1869.  

According to Korean lawmakers, transitioning to the internationally accepted way of calculating age does more than just get rid of the confusion. The three different methods of calculating age also caused conflict by “fostering a culture of hierarchy based on age and avoiding certain months for childbirth,” lawmaker Hwang Ju-hong wrote in another bill introduced in 2019, CNN reported.

Our new weekly Impact Report newsletter examines how ESG news and trends are shaping the roles and responsibilities of today's executives. Subscribe here.
About the Author
Sophie Mellor
By Sophie Mellor
LinkedIn iconTwitter icon
See full bioRight Arrow Button Icon

Latest in

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • World's Most Admired Companies
  • See All Rankings
  • Lists Calendar
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in

You should pick your credit card perks like Warren Buffett picks his stocks, TD Bank exec says
Personal FinancePersonal Finance Evergreen
You should pick your credit card perks like Warren Buffett picks his stocks, TD Bank exec says
By Catherina GioinoApril 27, 2026
4 hours ago
Elon Musk and Sam Altman on-stage together at a 2015 conference.
LawSam Altman
Musk vs. Altman: Burning Man, a ‘diary,’ and a trial almost no one thinks Musk can win
By Eva RoytburgApril 27, 2026
5 hours ago
quesada
Commentaryfertilizer
Former president of Costa Rica on de-risking fertilizer shocks: how $700 billion in subsidies can do more
By Carlos Alvarado QuesadaApril 27, 2026
5 hours ago
chernobyl
PoliticsUkraine
‘Strikes on nuclear facilities and other hazardous sites has now become reality’: Ukrainians deal with risks at Chernobyl after Russia invaded
By The Associated Press and Hanna ArhirovaApril 27, 2026
5 hours ago
Strategy co-founder and executive chairman Michael Saylor speaks during the Bitcoin 2025 conference in Las Vegas
CryptoBitcoin
Bitcoin drives back toward $80K—but one billionaire may be fueling much of the rally
By Jack KubinecApril 27, 2026
6 hours ago
Trump points while flanked by men in suits
PoliticsWhite House
White House to evaluate event security protocols after third shooting attempt against Trump
By The Associated Press and Will WeissertApril 27, 2026
6 hours ago

Most Popular

Elon Musk says saving for retirement is irrelevant because AI is going to create a world of abundance: 'It won't matter'
Future of Work
Elon Musk says saving for retirement is irrelevant because AI is going to create a world of abundance: 'It won't matter'
By Marco Quiroz-GutierrezApril 26, 2026
1 day ago
Apple cofounder Ronald Wayne—whose stake would be worth up to $400 billion had he not sold it in 1976—says that at 91, he has no regrets
Success
Apple cofounder Ronald Wayne—whose stake would be worth up to $400 billion had he not sold it in 1976—says that at 91, he has no regrets
By Preston ForeApril 27, 2026
9 hours ago
The U.S. military may have already used up half of its most expensive missiles, and it could take up to 4 years to rebuild its stockpiles
Politics
The U.S. military may have already used up half of its most expensive missiles, and it could take up to 4 years to rebuild its stockpiles
By Sasha RogelbergApril 24, 2026
3 days ago
Baby boomers have now 'gobbled up' nearly one-third of America's wealth share, and they're leaving Gen Z and millennials behind
Investing
Baby boomers have now 'gobbled up' nearly one-third of America's wealth share, and they're leaving Gen Z and millennials behind
By Sasha RogelbergApril 26, 2026
1 day ago
More than 90,000 tech workers have been laid off this year. But here’s why companies like Microsoft are offering voluntary buyouts instead
Big Tech
More than 90,000 tech workers have been laid off this year. But here’s why companies like Microsoft are offering voluntary buyouts instead
By Jacqueline MunisApril 26, 2026
1 day ago
'You feel radicalized': A Meta AI exec watched agents beat her top workers. Now she's built a nonprofit to help Gen Z find jobs before they disappear
Future of Work
'You feel radicalized': A Meta AI exec watched agents beat her top workers. Now she's built a nonprofit to help Gen Z find jobs before they disappear
By Jake AngeloApril 26, 2026
2 days ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.