Age calculator
Exact age in years, months and days, and the next birthday
Loading Age calculator…
How to use it
- Enter your numbers.
- The result updates as you type.
- Change any value to see a different outcome.
Questions
How is age calculated?
Count whole years from the birth date, then whole months, then the remaining days. Someone born on 15 May 1990 is 36 years, 4 months and 25 days old on 10 October 2026.
What if someone was born on 29 February?
In years that are not leap years this calculator counts the birthday on 28 February. Some countries and laws use 1 March instead.
Is anything I enter stored?
No. Calculations happen in your browser and nothing you type is sent or saved.
Is it free?
Yes, you can use it for free. A subscription removes limits and unlocks premium tools.