Age Calculator
Find your exact age in years, months and days — and total days, weeks and hours you have been alive.
How to use it
Pick a birth date and the calculator works out the exact age — not just years, but the months and days too — plus fun totals like days and weeks lived, and when your next birthday falls. The second date field lets you answer “how old will I be on…” for any future or past date, handy for forms, eligibility cutoffs and school enrollment.
Why exact age matters
US forms ask for exact age more often than people expect: kindergarten cutoffs, driving permits at 15½ or 16 in many states, voting at 18, and Social Security eligibility at 62. A one-month difference can move an answer from no to yes.
Frequently Asked Questions
How is age calculated exactly?
Full years since birth, then full months since the last birthday, then remaining days — the same method official forms use.
Can I calculate age on a past date?
Yes — set the second date to any day and the result shows the age on that day.
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