18 (number) - Age 18

Age 18

See also: 18 certificate, Coming of age, and Voting age

In most countries, 18 is the age of majority.
In most countries, 18 is the voting age.
In eleven states of the United States, 18 is the age of sexual consent, in addition Pennsylvania has a corruption of minors law that makes the de facto age of consent there 18, and this is also the case in some jurisdictions outside the USA. It is also the age of sexual consent under USA federal law (although this law only applies in circumstances involving transportation or transaction between different states or outside the USA).

In the United States, 18 is also the age when a person can watch an NC-17 film.