CALCULATOR
Age Calculator
Choose a birth date and reference date to calculate age using completed calendar years.
Enter a birth date to calculate age as of today.
Result
Age -
How this calculator works
Age increases only after the birthday has passed in the selected reference year.
Official eligibility rules can use a different cutoff date, so confirm the rule for legal or administrative use.
Calculation example
Example input: Birth date: August 24, 2000 · Reference date: August 24, 2026
Result: The completed-calendar-year age is 26.
Frequently asked questions
How is exact age calculated?
Age is based on completed calendar years, so it increases only after the birthday passes in the reference year.
Can I use a date other than today?
Yes. Choose any valid reference date to calculate age on that date.