Age Calculator

The calculator counts the exact number of complete years, months and days between your date of birth and the reference date (today by default). It also counts total days lived, calculates your next birthday countdown, and displays key life milestones based on your birth date.

The calculator uses precise day-by-day arithmetic. If you were born on 31 March and the current month doesn't have 31 days, the calculator adjusts to the last day of the prior month. Different calculators handle this edge case differently — ours follows standard calendar convention.

The UK State Pension age is currently 67 for both men and women born after April 1960. It is planned to rise to 68 between 2044 and 2046 for those born after April 1978. The calculator shows your projected State Pension date based on your date of birth.

Yes — simply enter the other person's date of birth in the first field. You can also change the reference date to calculate how old someone was or will be on any specific date in the past or future.

The calculator shows your total days lived below your main age result. For example, someone born on 15 March 1990 would be 13,222 days old on 27 May 2026. This figure accounts for all leap years between your birth date and today.