How Old Am I?

The everyday method has two steps. Subtract your birth year from the current year, then subtract one more if your birthday has not arrived yet this year. Someone born in June 1990 is 35 in March 2026 and 36 from June onward.

For an exact age you continue past whole years: count complete months from your most recent birthday, then the leftover days. A partial month is never rounded up — it stays as days. That convention, and what happens at month ends and on leap days, is written out in full in our calculation methodology.

If you need the answer in a specific format — total months for a school assessment, or a years;months figure for a test form — the chronological age calculator and the assessment age calculator report those directly.

Your age in days is the number of midnights between your birth date and today, leap days included. A quick estimate is your age in years multiplied by 365.25, but that drifts, so the calculator above counts the days rather than approximating them.

Day counts are how most people mark the odd milestones that birthdays miss:

The table is approximate because years and months vary in length. For the exact date each milestone falls on, enter your date of birth above: the result lists every one from 1,000 to 30,000 days, with how long ago it was or how long you have to wait. The birthday calculator counts down to your next birthday instead.

Each birth year below turns a given age at some point during 2026. Before your birthday you are one year younger than the figure shown; from your birthday onward you are that age.

A birth year alone can never give one exact age, because the answer changes on your birthday. Enter the full date above for the precise figure, or open a year (1930 to 2025) for its own page: the age in every year, the year it turns 18, 21 or 65, and its generation (the what generation am I page compares generation sources). Going the other way, the birth year calculator turns an age into the year someone was born.

Choose Another date under “Age on” and pick a future date, and the result becomes your age on that day. It is the same arithmetic run forward, so it handles leap years and month lengths the same way, and it is the quickest way to answer questions like how old you will be at a wedding, a graduation, or in the year 2050.

For long horizons the retirement age calculator gives the countdown to a target age directly, and the age difference calculator compares two people rather than two dates.