Find your exact age in years, months and days — plus your next birthday, age on any past or future date, and fun milestones.
Leave “Age on” as today to find out how old you are right now, or pick any past or future date.
Your exact age
How to use this tool
Type or pick your full date of birth from the calendar, including the year.
Leave it as today to find out how old you are right now, or pick any other date to see your age on that day.
Your age appears instantly in years, months and days, with your next birthday and the day of the week you were born.
Switch on “Show details” to see your total days, weeks, hours and minutes lived.
Formula & worked example
Born 15 June 1990, on 21 October 2026 you are 36 years, 4 months and 6 days old: 36 whole years to 15 June 2026, then 4 whole months to 15 October 2026, then 6 more days to 21 October 2026. Your next birthday is 15 June 2027.
Limitations — read this before you rely on it
This is a calendar age, not a biological age: it does not measure health, fitness or how old you feel. Western zodiac signs are traditional astrology, not science, and are shown for fun. Dates use the Gregorian calendar; very old historical dates may not match local calendars of the time.
Frequently asked questions
Enter your date of birth and leave “Age on” set to today. The calculator shows your exact age in years, months and days, plus your total days lived.
Your next birthday is shown under your age, with the exact number of days until it. If your birthday is today, it says so — happy birthday!
A date of birth calculator (often called a DOB calculator) works out your age from your birth date. Ours also gives your next birthday, the weekday you were born on, and your zodiac sign.
Yes. Leap days are counted exactly in the day totals, and a 29 February birthday is celebrated on 28 February in non-leap years for the “next birthday” count.
Yes. Change the “Age on” date to any date — for example, your age on the day you started school, or how old you will be on a future birthday.