A practical example
Age on a future date
Enter the birth date, replace today with the future comparison date, and read the age that person will be on that date.
Age Calculator
Enter a birth date to see the complete age.
Your work stays in this browser.
Exact ageWaitingEnter a date of birth to begin.
How to use the Age Calculator
Age Calculator finds a complete age from a birth date and a comparison date. It can also compare two birth dates, which is useful when you need the age gap between people rather than each age separately.
Choose an age mode
Use Exact age for one birth date or Age difference to compare two birth dates.
Enter the relevant dates
Add the birth date and the date on which the age should be calculated.
Read the complete breakdown
Review years, months, days, total time, and the next-birthday information provided.
What to know
- A calendar age is not the same as dividing total days by 365 because month lengths and leap years vary.
- Dates are interpreted using the calendar in your browser.
Questions people ask
Can I calculate age on a date other than today?
Yes. Change the comparison date to any valid date on or after the birth date.
What does age difference compare?
It measures the calendar gap between two birth dates.