How this calculator works
The calculator compares calendar dates, adjusting months and days to produce a human-readable age.
Age = Selected date − Date of birth
Use realistic inputs
Enter current, realistic figures for the most useful estimate.
Date & Time
Age Calculator
Calculate exact age in years, months and days from a date of birth.
Frequently asked questions
Does it account for leap years?
Yes, browser date calculations include leap years.
Can I calculate age on a future date?
Yes, choose any valid date after the date of birth.
Is this suitable for official forms?
Use the date required by the form and verify any official age rules separately.
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