Free date and time calculators
Dates come up more often than most people expect: school and college admissions, job applications, passport and visa forms, insurance, and plain curiosity about how old someone is. Working them out by hand means counting months of different lengths and leap years, which is easy to get wrong. The tools on this page do the counting for you and show the result clearly.
Age Calculator
Enter a date of birth and the Age Calculator shows the exact age in years, months and days. It also shows the total days lived, the weekday you were born, and your next birthday. The “Age at” date starts as today, but you can change it to any other date. That is useful when a form asks for your age on a specific day, such as the closing date of an admission or a job application.
How to use the Age Calculator
- Open the Age Calculator.
- Enter the date of birth.
- Leave “Age at” as today, or choose another date.
- Read your result in years, months and days.
Common questions
How do I calculate my exact age?
Enter your date of birth in the Age Calculator. It shows your age in years, months and days, so you don’t have to count anything yourself.
Can I find my age on a past or future date?
Yes. Change the “Age at” date to any day you like, and the calculator works out the age on that day.
How do I find out which day of the week I was born?
The Age Calculator shows the weekday of your birth along with your age.
How do I know the results are correct?
We test every calculator with worked examples that you can check yourself. You can read how on our How We Test page.