Age & Birth Year Calculator

Temporal Identity Bridge

Calculate international age, zodiac signs, and key life milestones based on your birth date.

International Age

36

표준 법적 나이

Year Age36
Zodiac

Life Milestones

100

100세: 2090

환갑

61세: 2050

Age can differ depending on the reference date and age system

This calculator uses date of birth to show international age, year age, zodiac animal, and milestone years. Korea now uses international age as the legal and administrative default, but year-age wording may still appear in everyday contexts.

Calculation basics

International age

current year - birth year, minus 1 if this year's birthday has not passed

Year age

current year - birth year

Zodiac animal

matched from birth year modulo 12

How to use

  1. Select the date of birth.
  2. Compare international age with year age.
  3. Use milestone years such as 60th-cycle or 100th birthday as calendar references.

Frequently asked questions

What is international age?

It increases on your birthday, not on January 1.

What is year age?

It simply subtracts birth year from current year, so it changes when the calendar year changes.

Is the zodiac animal lunar-calendar accurate?

This is a simple birth-year match. Traditional systems using lunar dates or solar terms may differ.

Results are general calendar calculations. For legal or administrative age rules, confirm with the relevant authority.