Age Calculator (Years, Months, Days)
The Age Calculator (Years, Months, Days) shows your exact age split into years, months and days from your date of birth, plus a combined 'exact age' line. Enter your birth date to see how old you are today.
Formula
Age = Today − Birth Date, expressed as years, months and days
- The calculator counts whole years, then remaining months, then leftover days between your birth date and today.
- If the day-of-month hasn't been reached yet, it borrows a month so the day count stays positive.
- The 'exact age' line combines all three into a single readable figure.
- Day borrowing uses a 30-day approximation, so results near month ends can vary by a day or two.
Example Calculation
Inputs
- Birth Date: 2000-01-15
For a birth date of 15 January 2000, the calculator shows your age today as separate years, months and days, plus a combined exact age.
Frequently asked questions
What does this calculator show?
It shows your age split into years, months and days, along with a single combined exact-age summary.
Why might the days differ slightly from a strict count?
Day borrowing uses an approximate 30-day month, so results near the end of a month can be off by a day or two.
Does it account for whether my birthday has passed?
Yes. If your birthday hasn't occurred yet this year, the year count is reduced accordingly.
Can I check someone else's age?
Yes. Enter any date of birth to see that person's current age.
What's the difference from the years-only calculator?
This one adds months and days for a more detailed breakdown rather than just whole years.