Free Online Age Calculator - Calculate Exact Age in Years, Months & Days
Quickly find your exact age by entering your birthdate. Perfect for tracking milestones, planning events, or verifying age requirements easily.
Calculate Age
Date Difference
Age Result
Calculation History
How to Calculate your Lunar Age
School Age Calculator
Calculates if a child meets the age cutoff for starting school based on their birthdate and year.
USSSA Age Calculator
Find your child’s USSSA age group based on their birthdate and the May 1st cutoff rule.
ASQ Age Calculator
Quickly find the right ASQ form by calculating a child’s age from birth to screening date.
Accelerated Aging Calculator
Estimate how lifestyle and factors might speed up your biological aging compared to your years.
How to Calculate Age from Date of Birth in Excel
- Use the
DATEDIFfunction to calculate age in full years. - Formula:
=DATEDIF(A1, TODAY(), "Y") - A1 should contain the birthdate (e.g.,
01/15/1990). - This formula returns the age in complete years as of today's date.
- You can also calculate months or days using "YM" or "MD" as the unit.
Tree Age Calculator
How to Calculate Age in Excel?
You can easily calculate age in Excel using the DATEDIF function. Simply enter =DATEDIF(A1, TODAY(), "Y") where A1 contains the birthdate. This formula returns the age in full years based on the current date. It's a quick and accurate method, perfect for HR systems, school records, or any scenario that requires age tracking. You can also extend it to calculate months or days for more detailed results.
How Old is Someone Born in 1997?
Someone born in 1997 is 28 years old as of 2025, assuming their birthday has already occurred this year. If their birthday is still upcoming, they are currently 27. Age calculations like this depend on the current date and whether the birthdate has passed. It’s a quick reminder of how time flies — 1997 babies are now well into adulthood, often building careers, families, and financial independence.
What Year Was it 18 Years Ago?
Eighteen years ago from the current year, 2025, takes us back to 2007. It was a year marked by rapid tech growth, early social media adoption, and major global events. Calculating years in reverse is useful for age verification, historical timelines, or checking eligibility for things like voting, driving, or graduating. So, if someone says they were born 18 years ago, they were likely born in 2007.
How do I calculate age if I don't know my exact birth date?
If you know the year but not the exact date, you can estimate by using July 1st of that year as a midpoint. For approximate calculations, you can use just the birth year, though this will be less accurate. Some cultures traditionally celebrated birthdays on significant dates (like New Year's) when exact dates weren't recorded.