AgeTime : DOB & Age Calculator

How old am I? Exact age by DOB in seconds. Birthday, zodiac & retirement age.

Ever stared at a form asking for your exact age in days — and had absolutely no idea? That's the gap AgeTime fills. Type your date of birth and get your exact chronological age down to the second: years, months, weeks, days, hours, minutes, and seconds — all instant, no math required. Whether you're asking "how old am I," figuring out your retirement age, or checking your baby's age in weeks, this is the one age calculator app built for real American life.

AgeTime covers everything: live age counter, birthday countdown, planetary age calculator, zodiac sign finder, DOB estimator, date calculator, working days counter, anniversary calculator, and life milestone statistics. Eleven tools, one app — offline, no login, no ads.

HOW OLD AM I — AGE CALCULATOR BY DATE OF BIRTH
Enter your DOB and see your exact age in years, months, weeks, days, hours, minutes, and seconds. Perfect for school enrollment age by state, FAFSA age eligibility, insurance forms, legal documents, and simply knowing how many days old you actually are. Born in 1960? 1975? 1990? Just enter your birth year and get your age instantly.

BIRTHDAY COUNTDOWN & BIRTHDAY TRACKER
Save birthdays for family, friends, and colleagues with photos. Get reminded days before so you never miss one. How many days until my birthday? AgeTime tells you instantly. Tracks milestone birthdays, golden birthdays, half birthdays, quinceañera age, bar and bat mitzvah ages, and sweet sixteen countdowns. Sort saved contacts by name or upcoming date.

BABY AGE CALCULATOR & TODDLER MILESTONES
Track your baby's age in weeks, days, and months from birth. See newborn corrected age, infant growth milestones, when baby can start solids, teething age, crawl and walk milestones, and first words age milestone. Parents love the toddler age milestones section — especially for preschool age requirements and kindergarten age by state.

PLANETARY AGE CALCULATOR
See your age on Mercury, Venus, Mars, Jupiter, Saturn, Uranus, and Neptune — each calculated from that planet's actual orbital period. Your age on Mercury is nearly four times your Earth age. On Neptune, most people are still in single digits. It's accurate, surprising, and genuinely hard to stop checking.

DATE CALCULATOR & DAYS BETWEEN DATES
Pick any two dates and get the exact difference — total days, weeks, months, and years. Use it for anniversary years calculator, wedding anniversary calculator, pregnancy weeks calculator, days between dates for employment, and work anniversary calculator. Working days counter skips weekends automatically.

ZODIAC SIGN CALCULATOR & BIRTHSTONE FINDER
Enter any DOB and get Western zodiac sign, Chinese zodiac animal, birthstone, and compatibility overview. No separate horoscope app needed.

LIFE MILESTONES & STATISTICS
Total days lived, leap years experienced, visual age progress, billion-second milestone alerts, and life expectancy calculator. What generation am I? AgeTime tells you — Boomer, Gen X, Millennial, or Gen Z — based on your birth year.

No account, no login, no data collection. Your DOB and saved birthdays stay on your device — private and secure.

Whether you want to know your full retirement age, check medicare enrollment age, track your baby's milestones, see your age on Mars — AgeTime has the answer, instantly and for free.

Download AgeTime now and use the most complete age calculator, date of birth calculator, birthday calculator, and date calculator in one powerful app. Instantly check “how old am I,” track your birthday countdown, calculate days between dates, and explore all-in-one tools designed for everyday life.

Try it today and experience fast, simple, and accurate age calculation — anytime, anywhere.