Age Calculator: Find the Time Between Two Dates
Use an age calculator to find the elapsed time between a date of birth and another date, such as today or a chosen milestone. Check the selected date before using the result in forms or records.
Calculate age from two dates
- Enter the date of birth in the first date field.
- Keep the comparison date set to today, or select a different date for an age-at-date calculation.
- Choose Calculate to see the elapsed years, months and days.
- Change either date to compare another scenario.
- Check date order and time zone assumptions before using the result in official paperwork.
How the age result is counted
The result is a calendar-date difference, not simply the number of days divided by 365. Leap years and month lengths affect the displayed years, months and days.
Accuracy and appropriate use
This utility calculates dates entered by the visitor. It does not verify identity documents, time of birth, local legal age rules, or eligibility for benefits. Check official records for legal or administrative decisions.
Frequently asked questions
Can I calculate age on a past date?
Yes. Set the comparison date to the date you want to check, then calculate.
Why can the result differ from dividing days by 365?
Calendar years include leap days and months have different lengths, so age is shown as calendar years, months and days.
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