Unit Converters · Free tool
Age Calculator
Calculate exact age in years, months, and days from any birth date to any target date.
Age
30years11months24days
7 days to next birthday
Months
371
Weeks
1,616
Days
11,316
Hours
271,584
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What it does
A free age calculator that returns your exact age in years, months, and days — plus total months, weeks, days, and hours lived, and days until your next birthday. Enter your birthdate and a target date; everything computes live in the browser.
Age calculators are useful for forms that need exact age-at-date, planning milestones (retirement, eligibility), or just curiosity. The total-days-lived number is a surprisingly motivating number to know — it’s finite, it’s counting, and it puts daily habits in perspective.
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Paste this snippet into any page. Loads on-demand (lazy), no tracking scripts, and sized to most dashboards. Replace the height to fit your layout.
<iframe src="https://freetoolarena.com/embed/age-calculator" width="100%" height="720" frameborder="0" loading="lazy" title="Age Calculator" style="border:1px solid #e2e8f0;border-radius:12px;max-width:720px;"></iframe>How to use it
- Enter your birthdate.
- Optionally set a target date (defaults to today).
- Read your age in years/months/days, plus total units lived.
- Check the countdown to your next birthday.
Frequently asked questions
- Does it account for leap years?
- Yes. The calculator uses the actual calendar — Feb 29 exists in leap years and gets counted correctly. Someone born on a leap day technically has a birthday every four years, but the calculator always returns a birthday on Feb 28 or Mar 1 in non-leap years.
- Can I calculate age as of a past date?
- Yes — set the target date to any past date. Useful for life-insurance policies that rate you as of a contract date, or historical research (how old was someone when an event happened).
- Is this accurate to the day?
- Yes, with caveat: time zones are ignored. If you were born at 11pm in UTC+1 and the calculation runs in UTC-8, the day count may be off by one. For pet age or routine use this is irrelevant.
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Learn more
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