Age Calculator – Calculate Your Exact Age
Calculate your exact age in years, months, and days from any date. Find out how many days until your next birthday.
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Korean Age vs International Age
Korea traditionally counts age differently: everyone adds one year at birth, and another year on January 1st regardless of birthday. As of 2023, South Korea officially adopted the international (Gregorian) age system for legal and administrative purposes. This calculator uses the international standard.
Why Age Calculation Matters
Precise age calculation is needed for insurance eligibility, retirement planning, medical screening schedules (such as colonoscopies at age 45), voting rights, and legal documents. A day's difference can matter in some jurisdictions.
Leap Year Considerations
People born on February 29 (leap day) technically only have a birthday every 4 years. For legal purposes, most countries recognize either February 28 or March 1 as their birthday in non-leap years. This calculator handles leap years automatically.