Age Calculator
Your exact age — years, months and days — plus a few fun totals.
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Years
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Months
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Days
- Total days lived
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- Total weeks lived
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- Next birthday
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Your dates never leave your device — the calculation happens entirely in your browser.
Exact age matters on government forms, exam applications, school admissions and insurance paperwork — and "about 20" is not good enough there. This calculator does proper calendar math, leap years included, from your date of birth to any date you choose.
Along with your exact age you get your total days and weeks lived, and a countdown to your next birthday. Your birth date never leaves your device.
How to calculate your age
- 1
Enter your date of birth
Use the date picker and select the day, month and year you were born.
- 2
Optionally change the "as of" date
It defaults to today. Set any other date to find your age on that day — past or future.
- 3
Read your exact age
Years, months and days — the same format official forms ask for.
- 4
Check your next birthday
See the date and how many days are left until you turn a year older.
Frequently asked questions
How is my exact age calculated?
By calendar math: full years first, then full months, then remaining days — correctly borrowing days across months of different lengths and accounting for leap years.
Can I calculate age on a specific past or future date?
Yes. Change the "as of" date to any day — for example the date of an exam or a form deadline — and the age is computed as of that date.
Is my date of birth stored or sent anywhere?
No. The calculation runs entirely in your browser; Dusrel never sees or stores your birth date.
Why do forms ask for age in years, months and days?
Because eligibility cut-offs (school admission, exams, jobs, pensions) are usually defined to the exact day. This format removes all ambiguity.
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