Age Calculator

Calculate your exact age in years, months, weeks, days, hours, minutes and seconds. Find days until your next birthday and discover interesting age facts.

Enter Birth Details

Birth Date January 15, 1990
Select your birth day, month, and year
Calculate Age At Today (January 19, 2026)
Select the date to calculate age at (default is today)
Compare With Famous People
Compare your age with famous people (optional)
Your Age Is
34
years old
408
Months
1,774
Weeks
12,419
Days

Age in Different Units

34
Years
408
Months
1,774
Weeks
12,419
Days
298,056
Hours
17,883,360
Minutes

Next Birthday

305 days to go
January 15, 2025
You will be 35 years old

Zodiac Sign

Capricorn ♑
Dec 22 - Jan 19
Ambitious, disciplined, patient

Life Milestones

2008
18 years
Became Adult
2013
23 years
Graduation Age
2025
34 years
Current Age
2028
38 years
Peak Career
2055
65 years
Retirement Age

About Age Calculation

The Age Calculator helps you determine your exact age from your birth date to any target date. It provides comprehensive results including years, months, weeks, days, hours, minutes, and even seconds. The calculator also shows your next birthday countdown, zodiac sign, and interesting age comparisons.

How Age is Calculated

Exact Age Calculation

  • Years: Complete years between birth date and target date
  • Months: Complete months in the current year plus years × 12
  • Days: Total days difference between dates
  • Weeks: Total days ÷ 7 (with remainder as extra days)
  • Hours/Minutes/Seconds: Based on 24-hour days

Birthday Logic

  • Age Increment: Age increases on birthday, not New Year
  • Leap Years: Accounted for in day calculations
  • Month Variations: Different month lengths considered
  • Time Zones: Uses local time for calculations

Zodiac Signs & Birthstones

Capricorn ♑

Dec 22 - Jan 19

Birthstone: Garnet

Element: Earth

Traits: Ambitious, disciplined, practical

Aquarius ♒

Jan 20 - Feb 18

Birthstone: Amethyst

Element: Air

Traits: Innovative, humanitarian, independent

Pisces ♓

Feb 19 - Mar 20

Birthstone: Aquamarine

Element: Water

Traits: Compassionate, artistic, intuitive

Aries ♈

Mar 21 - Apr 19

Birthstone: Diamond

Element: Fire

Traits: Courageous, determined, confident

Interesting Age Facts

Brain Development

The human brain continues developing until about age 25, with the prefrontal cortex (responsible for decision-making) being the last to mature.

Heart Beats

By age 70, the average human heart has beaten over 2.5 billion times and pumped about 150 million liters of blood.

Global Averages

Global average life expectancy is 73 years. Monaco has the highest at 89 years, while Chad has the lowest at 54 years.

Historical Context

In 1900, global life expectancy was only 31 years. Medical advances have nearly doubled life expectancy in just over a century.

Age-Related Milestones

Age Milestone Country/Region Description
0-1 Infancy Global Rapid physical and cognitive development
5-6 School Age Most countries Begin formal education
13-19 Teenage Years Global Adolescence and puberty
18 Legal Adult Most countries Can vote, sign contracts, marry
21 Drinking Age USA, India Legal drinking age in some countries
25 Car Rental Global Minimum age for most car rentals
30 Saturn Return Astrology Significant life transition period
40 Midlife Global Often associated with reflection
65 Retirement Age Most countries Eligible for pension/social security
100 Centenarian Global Celebrated longevity milestone

Age Calculation Tips

  • Birthday vs Anniversary: Your age increases on your birthday, not on January 1st
  • Leap Year Babies: People born on February 29 celebrate on February 28 or March 1 in non-leap years
  • Time Zones: If traveling, your "age day" changes based on time zone
  • Historical Dates: Gregorian calendar adoption varies by country (1582-1923)
  • Cultural Differences: Some cultures count age differently (Korean age adds 1-2 years)
  • Biological vs Chronological: Biological age can differ from chronological age based on health
  • Pet Ages: Pets age faster - 1 human year ≈ 15 dog years for first year, then ≈ 5 dog years
Note: Age calculations are based on the Gregorian calendar and assume 24-hour days. For historical dates before your country adopted the Gregorian calendar, results may differ. Time calculations assume local time zone. Birth time inclusion provides more precise age but is optional.

How is age calculated?

Age is calculated by finding the difference between birth date and target date. Years are complete years passed, months are complete months in current year plus years × 12, and days are total days difference.

What if I was born on February 29?

For leap year babies, age is calculated normally. On non-leap years, your birthday is considered February 28 for age calculation purposes. You're still one year older each year.

How accurate is the age calculator?

The calculator is highly accurate, accounting for leap years, month variations, and time (if provided). It uses the Gregorian calendar and accounts for different month lengths.

Can I calculate age for future dates?

Yes! You can calculate how old you will be on any future date. This is useful for planning milestones, retirement, or checking age requirements.

What's the difference between years and months age?

Years age shows complete years passed. Months age shows total months (years × 12 + months in current year). For example, 2 years 6 months = 30 months total.

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