Daily Calculator
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.
Real-world scenarios
- 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.
Common Age Rules at a Glance
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.
When this tool helps most
Helpful whenever official forms require exact age by date.