Age Calculator | Exact Age by Birth Date

Enter your birth date and reference date to calculate exact age and elapsed days.

How to use

Select your birth date.

Set a reference date or use today.

Check the age result.

Helpful whenever official forms require exact age by date.

Check child/adult fare categories before booking flights.

Verify minimum age requirements for services and registrations.

Fill official forms that require exact age on a specific date.

These are typical references only. Always check official airline and country rules before booking.

Flight age rules (typical in South Korea)
Adult: 12 years and older
Child: 2 years to under 12 years
Infant: under 2 years (under 24 months)
Domestic routes: lap infants are often free or charged very low fares.
International routes: lap infants are usually charged infant fare and taxes.

Typical overseas airline practice (US/EU/Japan)
Infants under 2: lap travel is commonly allowed; infant fare + taxes often apply on international routes.
Age 2 and above: a separate seat is required, with child/adult fare rules.
Age is often judged by departure date, so trips near birthdays should be checked in advance.

Other common age limits for travel
Hotels: free child stay/breakfast limits often vary around ages 3 to 6.
Car rental: some countries and providers add young driver fees under ages 21 or 25.
Travel insurance: maximum eligible age and child coverage differ by plan.