Age.Clock · Free Online Tool
Age Calculator
Free online age calculator by date of birth. Get your exact age in years, months, days, hours, minutes, and seconds — with a live counter, birthday countdown, and shareable life card.
Leave empty for a live ticking age.
Age gap calculator
Compare two dates of birth — couples, siblings, friends.
Reverse age calculator
Find the exact date you turn any age from your date of birth.
About this free age calculator
This age calculator helps you find your exact chronological age from your date of birth. Unlike a simple year difference, it accounts for months and days so you get a precise breakdown — ideal when you need to know how old you are today, on a past date, or on a future birthday.
Exact age by date of birth
Enter DOB (and optional birth time) to calculate years, months, days, hours, minutes, and seconds.
Live age & birthday countdown
Watch your age tick every second and see exactly how long until your next birthday.
Age gap & reverse age tools
Compare two birth dates, or use the reverse age calculator to find when you turn any age.
Age calculator FAQ
How does this age calculator work?+
Enter your date of birth (and optional birth time). The age calculator computes the exact elapsed time to today — or any date you choose — in years, months, days, hours, minutes, and seconds. Everything runs in your browser; we never store your birth date.
Is this age calculator free to use?+
Yes. This free online age calculator needs no signup. Calculate your exact age, birthday countdown, age gap, and reverse age instantly.
Can I calculate age by date of birth only?+
Yes. Date of birth is enough for a full age breakdown. Add birth time for second-level precision, or set an “as of” date to see your age on a past or future day.
What is a reverse age calculator?+
A reverse age calculator finds the exact calendar date when you turn a specific age — for example, when you turn 25, 30, or 50 — based on your date of birth.
Are planet ages and life facts exact?+
Planet ages use each planet’s orbital period. Fun life facts use common scientific averages — entertaining and shareable, not medical measurements.
Can I share my age calculator results?+
Yes. Download a life card image, use Share on mobile, copy a deep link that reopens your result, or copy the full text summary.
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