Age Calculator
Enter your date of birth to get your exact age down to the day.
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The ClickOnTool age calculator works out exactly how old you are from your date of birth to today (or any target date). It returns your age in years, months and days, along with totals in months, weeks, days and even hours, and counts down the days until your next birthday. It correctly handles leap years and varying month lengths so the result is always precise.
Why the exact date matters
Working out age in your head is easy to get wrong, because months have different lengths and leap years quietly add a day. Subtracting birth year from current year gives a number that is often off by one, depending on whether the birthday has happened yet this year. For anything official, such as a form, an eligibility check or a school admission, you want the precise figure in years, months and days rather than an approximation.
What you can work out
- Your exact age today in years, months and days.
- How old you were, or will be, on any specific date.
- Total months, weeks and days you have been alive.
- How many days remain until your next birthday.
Age on a future or past date
The second date field is more useful than it looks. Set it to a future date to check whether you will meet an age requirement by an application deadline, or how old you will be at an event. Set it to a past date to work out how old someone was when something happened. The calculation handles leap years and varying month lengths correctly in both directions.
Private by design
Your date of birth is personal information, and it never leaves your device here. The entire calculation runs in your browser, nothing is stored, and no account is required.
How to use Age Calculator
- 1
Select your date of birth using the date picker.
- 2
Optionally change the 'age at' date to calculate age on a future or past date.
- 3
Read your exact age and next-birthday countdown, revealed with a smooth animation.
Frequently asked questions
Yes. The calculation accounts for leap years and different month lengths for a precise result.