ganak.appBirthday Calculator
Calculate your exact age in years, months, and days with birthday countdown, zodiac sign, birth stone, Chinese zodiac, golden birthday, half birthday, and life path number. Free birthday calculator with instant results — all calculations run in your browser.
Select your date of birth and click Calculate to see your birthday facts
How to Use This Birthday Calculator
Enter your birth date and get instant results
Enter Your Date of Birth
Click the Date of Birth field and select your birth date using the date picker. You can scroll through months and years to find any date from 1900 onward.
Set the Reference Date
The 'Age On This Date' field defaults to today. You can change it to calculate your age on any past or future date — useful for planning milestone birthdays.
Click Calculate
Press the Calculate button to instantly see your exact age in years, months, and days, plus your birthday countdown, zodiac sign, Chinese zodiac, birth stone, birth flower, life path number, half birthday, and golden birthday status.
Birthday Facts Explained
Golden birthdays, half birthdays, numerology & more
Golden Birthday
A golden birthday happens when your age matches the day of the month you were born — for example, turning 17 on the 17th. It only happens once in your lifetime. Some people also celebrate a 'silver birthday' (turning the age of twice your birth day) or a 'diamond birthday' (turning 60 or 75).
Half Birthday
Your half birthday falls exactly 6 months after your actual birthday. It's especially popular for children born near Christmas or summer holidays, for babies reaching 6-month milestones, and in some schools for children whose birthdays fall during school breaks. Our calculator handles tricky month-end dates correctly.
Life Path Number
Your life path number is derived from your full birth date. Reduce your birth day, birth month, and year digit-sum separately — preserving master numbers 11, 22, and 33 at each step — then sum those three values and reduce once more to a single digit. It's the most important number in numerology, said to reveal your natural tendencies, life purpose, and challenges.
Birth Stone & Birth Flower
Each month of the year is associated with a traditional birth stone and a birth flower. Birth stones are gemstones believed to bring luck, protection, or meaning to those born in that month. Birth flowers similarly carry symbolic meanings. Both are popular choices for personalised birthday gifts.
Frequently Asked Questions
Common questions about birthday calculations, golden birthdays, half birthdays, and more