Age Calculator
Find your exact age in years, months and days, how long until your next birthday, and the day of the week you were born.
Enter a date of birth above and your age appears here as you type.
Everything is worked out in your browser as you type. Nothing you enter here is sent anywhere or saved.
About this tool
Age Calculator works out your exact age, or the age of anyone else, from a date of birth. It shows the result in years, months, weeks, days and even hours and seconds, which is handy for forms, birthdays and curiosity.
It is also useful for working out the exact time between two dates, and for checking age limits, such as whether someone is old enough for an exam or a programme.
How to use it
- Enter the date of birth.
- Check the date you are calculating up to. It is set to today unless you change it.
- Press calculate.
- Read the age in years, months and days, and in smaller units such as weeks and hours.
Example
Someone born on 3 March 2008 wants to know their age on 1 September 2026. The tool returns 18 years, 5 months and 29 days, together with the same period in weeks and days.
Tips
- Check that the day, month and year are in the right order for your device.
- Use a different end date to find an age on a particular day, such as the closing date of an application.
Questions people ask
Does it account for leap years?
Yes. It follows the real calendar when counting days.
Can I find my age on a past or future date?
Yes. Change the end date to the day you are interested in.
Is my date of birth stored?
No. The calculation is done on your device.
Why are my hours and seconds just an estimate?
They are calculated from the dates, not from the exact minute you were born, unless you know that time.