Age Calculator
Find out exactly how old you are. Enter your date of birth to see your age in years, months, and days, how many days you've lived, and how many days are left until your next birthday.
Your age
36 years, 5 months, and 30 days
Check the highlighted fields to see your result.
- Days lived
- 13,332
- Next birthday in
- 182 days
Results are estimates for information only and do not constitute financial, medical, or legal advice.
How your age is calculated
The calculator counts the complete years since your birth, then the complete months since your last birthday, and finally the days left over. If a month doesn't have your birth day (for example, the 31st), it uses the last day of that month.
"Days lived" is the number of days between your date of birth and the "Age on" date. It's set to today when the page opens, using your device's date.
Worked example
You were born on May 15, 1990. How old are you on November 12, 2026?
- Years: your birthday on May 15, 2026, has already passed, so you're 2026 − 1990 = 36.
- Months: from May 15 to October 15 there are 5 complete months.
- Days: from October 15 to November 12 there are 28 days.
Your age is 36 years, 5 months, and 28 days. Your next birthday, May 15, 2027, is 184 days away.
Frequently asked questions
Can I find my age on a past or future date?
Yes. Change the "Age on" date to any day, for example to see how old you were on a past date or how old you will be on a future one.
What if I was born on February 29?
In years that aren't leap years, the calculator counts your birthday on February 28. Some people celebrate on March 1 instead; the age in years is the same either way.
Why do the months and days look uneven?
Because months have different lengths. The calculator first counts whole months from your birthday and then the days left over, the same way you'd count on a calendar.