Use this free age calculator to find your exact age from date of birth in years, months, and days instantly. You can also measure total time lived and age as of a selected date.
Pick a birth date to calculate age instantly.
Select a date of birth to view an exact age breakdown in years, months, days, and more.
An age calculator helps you measure the exact time between a date of birth and a target date, usually today. It can show age in years, months, days, and total days lived. Age calculators are useful for personal records, school forms, medical documents, applications, and milestone tracking.
Age = Current Date − Date of Birth
Subtract birth year from current year, then adjust if the birthday has not occurred yet this year
Break the full date difference into years, months, and days
Input: Date of Birth = Jan 1, 2000
Result: Age shown as years, months, and days up to today
Input: Date of Birth = Jun 15, 1995; Target Date = Jan 1, 2025
Result: Exact age on the selected target date
Chronological age is the exact time elapsed since birth. Completed age usually refers to the number of full years already completed and may not include the remaining months and days.
Age calculators are commonly used for school admissions, job applications, medical records, insurance forms, retirement planning, and personal milestone tracking.
An exact age calculator saves time and reduces mistakes when calculating age manually, especially when leap years, month lengths, and target dates are involved.
Subtract the birth date from the current date or a selected target date, then break the result into years, months, and days.
Yes. Most age calculators can display exact age in years, months, and days.
Chronological age is the exact amount of time a person has lived since birth.
Yes. Many age calculators let you compare a birth date with any selected target date, not just today.
Yes. Accurate age calculators include leap years and the different lengths of calendar months.
Browse related calculator variations and find the version that matches your preferred units or use case.
Find exact age using date of birth.
Measure exact chronological age from birth to a selected date.
Convert age into total completed months.
Find total days lived from birth date.
Check age and countdown to the next birthday.
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