Age Calculator
Enter a date of birth to get an exact age in years, months and days, along with running totals of days, weeks and hours lived. The month arithmetic accounts for months of different lengths, so the day figure is a real count rather than an approximation based on 30-day months.
Free, no signupRuns entirely in your browser
Input
Result
- Age
- 31 Years, 7 Months, and 14 Days
- Total Days
- 11,549
- Total Weeks
- 1,649
- Total Hours
- 277,199
About
What the Age Calculator does
The same calculation works for anything with a start date — how long a company has traded, how long since a project launched, or the age of anything you have a date for.
How it works
Using the Age Calculator
- 1Enter the date of birth.
- 2Years, months and days are calculated separately against today's date.
- 3When the day-of-month has not yet been reached, a day is borrowed from the previous month using that month's real length.
- 4Total days are computed from the raw time difference.
- 5Weeks and hours are derived from that total.
Use cases
What people use it for
- Filling in a form that needs an exact age
- Checking eligibility against an age threshold
- Working out how long ago something happened
- Calculating a milestone date
FAQ
Frequently asked questions
6 related
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