The calculator compares calendar dates, subtracting years, months, and days while accounting for different month lengths and leap years.
Calculator
Age Calculator
Calculate an exact calendar age or compare two dates of birth. Results are produced instantly in the browser without manual date counting.
- Instant results
- Mobile friendly
- Free to use
Calendar calculator
Calculate age
Use the tabs to calculate one age or compare two dates.
Exact age—
—Total months
—Approx. weeks
—Total days
—Next birthday
Age difference—
Simple instructions
How to use the Age Calculator
Follow these steps to get a clear result.
- 1
Select a date of birth.
- 2
Choose the date on which the age should be calculated.
- 3
Select Calculate age to view the calendar age and useful totals.
- 4
Use the comparison tab to compare two dates of birth.
Frequently asked questions
Age Calculator FAQ
Yes. Change the “Age on” date to calculate age on a selected reference date, provided the reference date is not earlier than the date of birth.
Yes. The ProwessApps age calculator is free to use.
