Age Calculator — free online tool
Parents planning school admission, HR teams verifying eligibility dates, and anyone filling forms that ask “age as of today” get years, months, and days from a single birthday field.
When to use Age Calculator
Handy for school admission cut-offs, sports age groups, HR eligibility checks, and any form that asks “exact age” as years plus months rather than a rough whole number.
Cross-check anything that affects money or health with a qualified professional or official source.
What Age Calculator does not do
It is not a horoscope, life-expectancy, or leap-second astronomer. Age on this page is calendar arithmetic from two dates only.
How to use Age Calculator
- Pick your date of birth with the calendar control on the Age Calculator.
- Optionally change the “as of” date if you need age on a past or future day.
- Press calculate to see years, months, and days between the two dates.
- Note the breakdown for forms that ask for exact age rather than whole years only.
Practical tips
- For school or visa forms, note whether they want age "as of today" or "as of" a specific cut-off date.
- The months and days breakdown matters for infants and pension eligibility, not just whole years.
- Time zones do not shift a date of birth—enter the calendar date as written on the document.
Example
Enter 2012-06-15 as DOB and today as “as of” to see school-admission age in years and months.
Related tools on Webtoolshop
- Date Difference Calculator — Span between any two dates, not just age from DOB.
Limitations
Uses calendar dates in your browser timezone. Time-of-day and leap seconds are ignored. Not valid as a legal age certificate.
Privacy & data
For this calculator-style page, numbers and dates stay in your browser memory until you leave. They are not saved to our servers.
Frequently asked questions about Age Calculator
What does the Age Calculator not do?
It is not a horoscope, life-expectancy, or leap-second astronomer. Age on this page is calendar arithmetic from two dates only.
Give me a concrete example for the Age Calculator.
Enter 2012-06-15 as DOB and today as “as of” to see school-admission age in years and months.
Can I use the Age Calculator for official tax, loan, or medical decisions?
No. Results are simplified estimates for learning and quick checks. Confirm figures with a qualified professional, lender, or government source before filing or signing contracts.
Where does my input go when I use the Age Calculator?
For this calculator-style page, numbers and dates stay in your browser memory until you leave. They are not saved to our servers.
Age Calculator
Exact age from your birthday.