Age Calculator

Age Calculator instantly tells you exactly how old you are — down to the year, month, day, hour, and second — and packs in a full suite of date and age tools you'll actually keep coming back to. HOW OLD AM I? Enter your date of birth (and time, if you want extra precision) to see your exact age, upcoming birthday countdown, zodiac sign, Chinese zodiac, birthstone, birth flower, and the generation you belong to. KEY FEATURES Age & Date Tools - Age Calculator — exact age in years, months, days, hours, minutes and seconds - Age Difference — compare two people's ages side by side - Date Difference — find the exact span between any two dates - Working Days Calculator — count business days between two dates, with custom holidays - Leap Year Checker — check any year, past or future - Half Birthday — find the date you turn X½ years old - Live Age Tracker — watch your exact age tick up in real time Life & Milestones - Life Expectancy Estimator — a fun, rough estimate based on lifestyle factors - Retirement Age Calculator — see exactly how far away retirement is - Life Journey — a visual timeline of common life stages - Age Facts — heartbeats, breaths, sleep hours, steps, and more since the day you were born - Baby Age Calculator— track your baby's age in weeks and months, with growth milestones Just for Fun - Daily Horoscope — a quick reading for your zodiac sign - Planet Age — see how old you'd be on Mercury, Mars, Jupiter and more - Dog Age & Cat Age Calculator — convert your pet's age into human years - Stylish Greetings — ready-made birthday and celebration messages to copy and send Stay Organized - Save birthdays and important dates under Profiles - Add anniversaries, weddings, graduations and more under Events, complete with live countdowns - Optional reminders and notifications so you never miss a date - Share your age or a saved profile as a neat, shareable card - Light and dark theme support WHY USE AGE CALCULATOR? - Clean and easy to use — get your answer in one tap - No sign-up or account required - Works completely offline for all age and date calculations - Regularly updated with new tools