🇺🇸 USA • FREE EVERYDAY TOOLNO ACCOUNT NEEDED
NewsTrendusEveryday US tools and sourced news
Home / Calculators / Age Calculator by Date
Free online calculator

🎂 Age Calculator by Date

Calculate age in full years between a birth date and a selected comparison date. Results update instantly without a server.

Enter your values

Inputs stay on this page in your browser. You do not need to create an account.

Calculating…

General estimate only; verify actual rules, costs or clinical interpretation with an appropriate source.

Calculate completed years of age

Enter a date of birth and a comparison date. The calculator counts completed calendar years, taking into account whether the birthday has occurred in the comparison year. It also shows an approximate number of elapsed days.

Leap years and birthdays

The exact legal age for certain purposes may depend on state or federal rules, particularly around a February 29 birth date. Our result is a standard calendar calculation and not a legal eligibility determination.

Useful situations

You may use this tool for general personal planning, forms or historical comparisons. For age-restricted legal activities, consult the applicable authoritative rules.

Explore more free tools

Visit our calculators directory for mortgage, auto, credit card, rent, salary, tip and everyday math tools. You can also follow local US politics using source-credited headlines.