Can I calculate an age on a past or future date?
Yes. Change the “Age on this date” field to any valid date after the birth date.
Exact Age & Birthday Calculator — No Signup Needed
Find an exact age in years, months, and days. It works directly in this browser, with no account and nothing to install.
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Private by design: this tool works on your device. Your information is not uploaded.
How to use this age calculator
- Enter the person’s date of birth.
- Leave today’s date selected, or choose a different date.
- Select “Calculate age” to see the exact years, months, and days.
Common questions
Does this account for different month lengths?
Yes. The calculator uses calendar years, months, and days instead of treating every month as the same length.
Is the birth date saved?
No. The calculation happens in your browser, and the date is not sent to us.