SimpleWeb.tools

Age Calculator & Life Timeline

Calculate your exact age, identify your Generation, check your Zodiac signs, and see major historical events that have occurred during your lifetime.

Zodiac Dates Table (Western Astrology)

Your Western Zodiac sign is determined by the position of the sun on your date of birth. Use this chart to verify your sign:

SignSymbolDates
AriesMar 21 – Apr 19
TaurusApr 20 – May 20
GeminiMay 21 – Jun 20
CancerJun 21 – Jul 22
LeoJul 23 – Aug 22
VirgoAug 23 – Sep 22
LibraSep 23 – Oct 22
ScorpioOct 23 – Nov 21
SagittariusNov 22 – Dec 21
CapricornDec 22 – Jan 19
AquariusJan 20 – Feb 18
PiscesFeb 19 – Mar 20

Life Milestones & Fun Facts

Age is just a number, but some numbers are more interesting than others. Here are some biological and chronological milestones:

  • 1 Billion Seconds: You will reach this milestone when you are approx. 31 years and 8 months old.
  • Biological Peak: Most humans reach their peak physical bone mass between ages 25 and 30.
  • Sleep: By the time you are 30, you have likely spent about 10 years just sleeping!

Korean Age vs. International Age

In most of the world, you are 0 years old when born. However, in traditional Korean Age systems, a baby is considered 1 year old at birth (rounding up the time in the womb). Additionally, everyone "ages up" on New Year's Day, not their birthday! Our calculator uses the standard International Age system used on official documents globally.

The Math: How we calculate exact age

Calculating age isn't just `Current Year - Birth Year`. To be precise, our tool accounts for:

  • Leap Years: Every 4 years, February has 29 days. This affects the day count.
  • Month Lengths: Some months have 30 days, others 31 (and February has 28 or 29).
  • As-Of Date: We compare the specific day of the month to ensure you haven't "aged up" until your actual birthday.