Calculate current age or age on any date in years, months and days, with totals and the next birthday.
Processed locallyYour files never leave your device. How it works
- Select the date of birth.
- Use today or choose another reference date.
- Review years, months, days, total months, total weeks and total days.
- Check the next birthday and time remaining.
Practical example
Age is expressed as complete years, complete months since the last anniversary and remaining days.
Formula and explanation
The calculation uses calendar dates, not an approximate division by 365.
Leap years and February 29 births are handled explicitly.
Frequently asked questions
Can I calculate age on another date?
Yes. Change the reference date to any past or future date after birth.
How is February 29 handled?
In non-leap years, this calculator treats February 28 as the anniversary.
Do days lived include the birth date?
They show the complete difference between the two dates without adding an extra day.