Loading the tool…
About the Age Calculator
Calculate an exact age from a date of birth, on today’s date or any other date. See the age in years, months and days, the total days lived and how many days remain until the next birthday.
How to use it
- Pick the date of birth.
- Leave “age on” as today or choose another date.
- Read the age and the countdown to the next birthday.
Frequently asked questions
How are months and days counted?
Complete years first, then complete months, then the remaining days, borrowing the length of the previous month when needed.
Can I use it to find the gap between any two dates?
Yes. Put the earlier date in the first box and the later one in “age on”.
Related tools
Percentage CalculatorPercent of a number, “what percent is X of Y” and percent change.Discount CalculatorFinal price after one or two discounts, and how much you save.BMI CalculatorBody mass index in metric or imperial units, with the healthy weight range.
Results are estimates for general information. For financial, tax, medical or legal decisions, check with a qualified professional.