Age Calculator
Enter a date of birth to see an exact age in years, months and days, and how long until the next birthday.
Quick answer: Your age is the number of full years between your date of birth and today. Enter a birth date below to see your exact age in years, months and days, the total days lived and your next birthday.
How to use it
- Enter your date of birth.
- The second date is today. Change it to find the age on any other day.
- Your age appears in years, with the months, days, total days and next birthday below.
How age is calculated
Age counts the full years since birth. Subtract the birth year from the current year, then take away one year if the birthday has not happened yet this year. The months and days are what is left after the full years. A year has 365 days, or 366 in a leap year, so total days lived are counted day by day.
| Age | Days (about) |
|---|---|
| 1 years | 365 |
| 5 years | 1,826 |
| 10 years | 3,652 |
| 18 years | 6,574 |
| 21 years | 7,670 |
| 30 years | 10,958 |
| 40 years | 14,610 |
| 50 years | 18,262 |
| 65 years | 23,741 |
| 80 years | 29,220 |
The table uses an average year of 365.25 days. The calculator above counts the exact days.
What people use it for
- Finding your exact age on a form
- Counting days to a birthday
- Working out a child's age in months
- Checking age limits for school or events
- Finding age on a past or future date
Questions
How do I calculate my age?
Subtract your birth year from the current year, then subtract one if your birthday has not happened yet this year.
Can I find my age on a past or future date?
Yes. Change the second date to any day.
Does it handle leap years?
Yes. It counts real calendar days.
Is my birth date saved?
No. Nothing is stored or sent.
Is it free?
Yes. No sign-up, no install and no limit.
Is anything saved or sent?
No. Everything runs in your browser. Only your own best score, where a page shows one, is kept on your device.
Last updated 2026-10-24. Free to use, no sign-up. Made by ficklestudio26.