Birthday Calculator: Age, Countdown & Zodiac
Enter one date and get 16 birthday facts instantly: exact age, live countdown, zodiac, birthstone, life path number, milestones and more.
Months 0–11, days 0–30. We subtract this exact interval from today to estimate your birthday.
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🏆 Upcoming Milestones
What You Get From One Date
Every result appears together, with no switching between tools or tabs.
Exact Age
Years, months, days, weeks, hours and a live seconds counter.
Birthday Countdown
Days, hours, minutes and seconds until your next birthday.
Zodiac Signs
Western sign plus your Chinese zodiac animal.
Birthstone & Flower
The gem and bloom assigned to your birth month.
Life Path Number
Pythagorean birth number, including master numbers.
Age on Planets
How old you would be on Mercury, Mars, Jupiter and more.
How It Works
Get your full birthday profile in three simple steps.
Enter Your Date
Pick your date of birth, or enter your age if you don't know it.
Tap Calculate
The calculator uses Gregorian calendar rules with leap-year correction.
See Everything
Age, countdown, zodiac, milestones and more show up instantly.
Western Zodiac Signs
Date ranges, elements and key traits for all twelve signs.
| Sign | Dates | Element | Traits |
|---|---|---|---|
| ♈ Aries | Mar 21 – Apr 19 | Fire | Bold, energetic |
| ♉ Taurus | Apr 20 – May 20 | Earth | Reliable, patient |
| ♊ Gemini | May 21 – Jun 20 | Air | Curious, witty |
| ♋ Cancer | Jun 21 – Jul 22 | Water | Intuitive, loyal |
| ♌ Leo | Jul 23 – Aug 22 | Fire | Confident, generous |
| ♍ Virgo | Aug 23 – Sep 22 | Earth | Analytical, meticulous |
| ♎ Libra | Sep 23 – Oct 22 | Air | Diplomatic, social |
| ♏ Scorpio | Oct 23 – Nov 21 | Water | Passionate, determined |
| ♐ Sagittarius | Nov 22 – Dec 21 | Fire | Adventurous, optimistic |
| ♑ Capricorn | Dec 22 – Jan 19 | Earth | Ambitious, disciplined |
| ♒ Aquarius | Jan 20 – Feb 18 | Air | Independent, progressive |
| ♓ Pisces | Feb 19 – Mar 20 | Water | Empathetic, artistic |
Generations by Birth Year
Cohort boundaries follow Pew Research Center.
| Generation | Birth Years |
|---|---|
| Silent Generation | 1928 – 1945 |
| Baby Boomers | 1946 – 1964 |
| Generation X | 1965 – 1980 |
| Millennials | 1981 – 1996 |
| Generation Z | 1997 – 2012 |
| Generation Alpha | 2013 – present |
💎 Birthstones & Flowers
Jan Garnet, Carnation · Feb Amethyst, Violet · Mar Aquamarine, Daffodil · Apr Diamond, Daisy · May Emerald, Lily of the Valley · Jun Pearl, Rose · Jul Ruby, Larkspur · Aug Peridot, Gladiolus · Sep Sapphire, Aster · Oct Opal, Marigold · Nov Topaz, Chrysanthemum · Dec Turquoise, Narcissus.
🎉 Half Birthday
Your half birthday is exactly six calendar months after your birth date, calculated by month arithmetic, not a fixed 182-day count.
🐉 Chinese Zodiac
A 12-year cycle: Rat, Ox, Tiger, Rabbit, Dragon, Snake, Horse, Goat, Monkey, Rooster, Dog, Pig. 2026 is the year of the Horse.
Frequently Asked Questions
Quick answers about birthdays and this calculator.
How many days until my birthday?
It is the number of calendar days from today to the next anniversary of your birth month and day. The live ticker shows hours, minutes and seconds too.
Why is February 29 treated as February 28?
In non-leap years February 29 doesn't exist. Most civil registration systems use February 28, and this calculator does the same.
How do I find my birthday from my age?
Use the "I Know My Age" tab, enter years, months and days, and the calculator subtracts that interval from today. Results can be off by ±1 day because months differ in length.
What is a birth (life path) number?
Add every digit of your full birth date and reduce it to one digit. Master numbers 11, 22 and 33 are kept. It's a numerology tradition with no scientific validation.
What is the birthday paradox?
In a group of just 23 people there is a 50.7% chance two share a birthday. At 57 people it exceeds 99%. For any one other person, the chance of matching yours is 1 in 365 (about 0.274%).
What is a golden birthday?
The year your age equals the day of the month you were born. Born on the 22nd? Your golden birthday is your 22nd.
Calculations follow the Gregorian calendar with leap-year correction and are for informational purposes only.