Free exact age calculator
Find your exact age in years, months and days — plus total days, weeks and hours lived, and a countdown to your next birthday. Enter your date of birth and get a precise breakdown instantly, all in your browser.
How to calculate your age
- Enter your date of birth.
- Optionally set the ‘calculate as of’ date (defaults to today).
- Read your exact age in years, months and days.
- Scroll for total days/weeks/hours and your next-birthday countdown.
Why use an age calculator
Working out an exact age by hand is fiddly because months and leap years vary in length. This tool handles all of that precisely — useful for forms, eligibility checks and birthday planning.
What it shows
- Exact age in years, months and days.
- Total days, weeks, hours and minutes lived.
- The day of the week you were born.
- Days until your next birthday.