Is R-rated the same as 18?
Rated G: Suggested for general audiences. Rated M: Suggested for mature audiences - Parental discretion advised. Rated R: Restricted – Persons under 16 not admitted, unless accompanied by parent or adult guardian. Rated X: Persons under 16 not admitted.
Restricted: R - Under 17 requires accompanying parent or adult guardian. Contains some adult material. Parents are urged to learn more about the film before taking their young children with them.
Restricted (R 18+)
This includes content that may be offensive to sections of the adult community. A person may be asked for proof of their age before purchasing, hiring or viewing R 18+ films and computer games at a retail store or cinema.
R-rated movies containing graphic violence, nudity and bad language are all many factors a child will be exposed to some time in their lifetime. Prohibiting a teen from watching a movie only shelters them.
R: RESTRICTED. Under 17 requires accompanying parent or adult guardian.
Content suitable only for adults ages 18 and up. May include prolonged scenes of intense violence, graphic sexual content and/or gambling with real currency.
No one younger than 18 may see an 18 film in a cinema.
The MPA gave the movie an NC-17 rating "for some sexual content." NC-17 is a higher classification than an R rating and means no one under 17 years old can be admitted to see the movie, whereas for rated-R films, those under 17 can see the movie with a parent or guardian. Blonde is set to stream on Netflix soon.
AMC Requires Adult Supervision For Guests Under 17 in R-Rated Movies. AMC policies specific to R-Rated titles include children under 6 are not allowed at R-Rated movies after 6pm at any theatre. Guests under 17 must be accompanied by a guardian who is 21 or older.
The R rating is the most common of the MPA ratings in cinemas. It means: Restricted - Under 17 Requires Accompanying Parent or Adult Guardian. It was established with the system. It is equivalent to TV Parental Guidelines' soft TV-MA, ESRB's M rating and MTRCB's R-16 rating.
Can a person under 18 watch an R-rated movie?
AMC Requires Adult Supervision For Guests Under 17 in R-Rated Movies. AMC policies specific to R-Rated titles include children under 6 are not allowed at R-Rated movies after 6pm at any theatre. Guests under 17 must be accompanied by a guardian who is 21 or older.
Britannica Dictionary definition of R–RATED. US, of a movie. : having a rating of R : not suitable to be seen by children because of violence, offensive language, or sexual activity.

The only major difference is the R rating, which has no direct equivalent - although most R-rated films get a 15 certificate, in Britain under-15s are not admitted even with an accompanying adult. A crucial difference between the two systems is that MPAA ratings are voluntary.