Age Calculator
Calculate your exact age in years, months, days. Get your age on Mars, dog years, life path number, Chinese zodiac, moon phase at birth & 40+ unique facts.
How to Use Age Calculator
- 1 Enter your birth date (day, month, year)
- 2 See your exact age in years, months, and days instantly
- 3 Explore 4 tabs: Overview, Space, Body, and Numbers
- 4 Discover 40+ unique facts about your life journey
What You Get
The most comprehensive age calculator online. Beyond exact age, discover your age on other planets (Mercury, Venus, Mars, Jupiter), dog & cat years, Chinese zodiac, generation, birthstone, birth flower, moon phase when born, life path number, lucky number, total heartbeats, breaths, dreams, age in binary/hex/Roman numerals, when you'll be 1 billion seconds old, world population at birth, and retirement countdown.
Input: January 15, 1990
Output: 35 years + 146 Mars years + 🐉 Dragon + Life Path 8
Input: July 4, 2000
Output: 25 years + 257 dog years + 🌕 Full Moon at birth
Input: December 25, 1985
Output: 40 years + 💎 Turquoise birthstone + Gen X
Input: February 29, 2000
Output: Leap year baby + Millennium Baby ✓
How do I calculate my exact age?
Enter your birth date. The calculator shows your exact age in years, months, and days, plus total days, weeks, hours, and minutes you have lived.
How do I calculate my age on other planets?
We divide your Earth age by each planet orbital period. Mars year = 687 Earth days. Jupiter year = 4333 days. You are older on Mercury, younger on Jupiter!
How do I calculate age in dog years?
First 2 years = 10.5 dog years each. After that, 4 dog years per human year. A 10-year-old human is about 53 in dog years.
What is my Life Path Number?
A numerology calculation from your birth date digits. All digits are summed and reduced to 1-9 (or master numbers 11, 22, 33). Enter your birthdate to see yours.
How accurate is the moon phase at birth calculation?
We use the lunar cycle (29.53 days) from a known new moon date. Results are reasonably accurate for determining the moon phase when you were born.
When will I be 1 billion seconds old?
One billion seconds equals about 31.7 years. Enter your birthdate and we calculate the exact date of this milestone if you have not reached it yet.
What is my Chinese zodiac animal?
Based on your birth year following the 12-year lunar cycle: Rat, Ox, Tiger, Rabbit, Dragon, Snake, Horse, Goat, Monkey, Rooster, Dog, or Pig.
How many days until my next birthday?
The calculator counts days from today to your next birthday. Also shows the next milestone birthday (18, 21, 30, 40, 50, etc.) and days until you reach it.
Related:
100% client-side. Your birth date never leaves your browser – no data stored or transmitted.