About this age calculator
Calculate age between two dates and show the elapsed years, months, and days.
How to use it
Enter the values requested by the calculator. Results update in your browser as you change the inputs. Review the assumptions shown on the calculator before using the result.
Formula
age is calculated from calendar dates
Example
Enter the birth date and comparison date to calculate the elapsed calendar age.
Frequently asked questions
What does the age calculator show?
Calculate age between two dates and show the elapsed years, months, and days.
Are the results exact?
The result is calculated from the inputs and assumptions shown on this page. For important financial, health, tax, or legal decisions, verify the result with an appropriate professional or authoritative source.