Age Calculator
Enter a date of birth to see the exact age in years, months and days, and how long until the next birthday.
Enter a date of birth to see the exact age.
What you can work out
- Your exact age today, in years, months and days.
- How many months, weeks and days you have been alive.
- How many days until your next birthday, and which weekday it falls on.
- The weekday you were born on.
- Someone's age on any other date, past or future.
Frequently asked questions
How is age calculated?
First the whole years since the date of birth are counted, then the whole months since the last birthday, then the days left over. That is how people normally say their age, such as 34 years, 2 months and 5 days.
Can I find someone's age on a past or future date?
Yes. Change the Age on date. It is useful for forms that ask your age on a set date, for school year cut-offs, or for how old someone was at an event.
What about birthdays on 29 February?
In years without 29 February, the birthday is counted on 28 February, which is the most common convention. Laws differ by country, and some use 1 March.
Is my date of birth stored?
No. The calculation happens in your browser and nothing is saved or sent anywhere.