Film Age Ratings Explained: MPA, BBFC, Canada and Australia

Film age ratings tell you who a film is suitable for and, in some cases, who is legally allowed to see it in a cinema. In the US, the MPA uses G, PG, PG-13, R and NC-17. The UK’s BBFC uses U, PG, 12A, 12, 15, 18 and R18. Canada and Australia have their own systems, and the same film can get a different rating in each country. This guide explains what each rating means, which ones are advisory and which are legally enforced, and how to check the reasons behind a rating before you watch.

Ratings and guidance are updated from time to time, so treat the official classification websites as the final word. Each also publishes a short note explaining why a film received its rating, which is often more useful than the letter or number alone.

How Do US Film Ratings Work?

In the United States, ratings are issued by the Classification and Rating Administration, part of the Motion Picture Association (MPA) and run with the National Association of Theatre Owners. The system is voluntary rather than set by law, but most cinemas enforce it.

• G – General Audiences: all ages admitted.
• PG – Parental Guidance Suggested: some material may not be suitable for children.
• PG-13 – Parents Strongly Cautioned: some material may be inappropriate for children under 13.
• R – Restricted: under-17s require an accompanying parent or adult guardian.
• NC-17 – Adults Only: no one aged 17 or under admitted.

Each rating comes with a short descriptor, such as “for strong violence and language”, which explains the main concerns.

How Do UK Film Ratings Work?

In the UK, the British Board of Film Classification (BBFC) rates films for cinema and home release. Local councils have the final legal say over cinemas, but they almost always follow BBFC decisions.

• U – Universal: suitable for all, including children aged four and over.
• PG – Parental Guidance: general viewing, but some scenes may be unsuitable for young children.
• 12A – cinema only: suitable for 12 and over; under-12s may watch only if accompanied by an adult.
• 12: home media and streaming; not suitable for under-12s.
• 15: no one under 15 may see or buy it.
• 18: suitable only for adults.
• R18: restricted, explicit works shown only in specially licensed cinemas or sold in licensed sex shops.

The difference between 12A and 12 confuses many people. 12A applies only in cinemas and lets younger children in with an adult; the same film normally becomes 12 when it is released for home viewing.

How Do Canadian Film Ratings Work?

Canada has no single national film rating. Each province or region rates films, though most English-speaking provinces share a common set of categories:

• G – General: suitable for all ages.
• PG – Parental Guidance: parents may want to check suitability for younger children.
• 14A: under-14s must be accompanied by an adult.
• 18A: under-18s must be accompanied by an adult.
• R – Restricted: admission restricted to adults aged 18 and over.
• A – Adult: adult content; admission restricted to adults.

Quebec uses its own system: G (General), 13+, 16+ and 18+, set by the provincial Ministry of Culture and Communications.

How Do Australian Film Ratings Work?

In Australia, the Classification Board rates films under national law. The first three ratings are advisory; the rest are legally restricted.

• G – General: suitable for everyone.
• PG – Parental Guidance: parental guidance recommended for viewers under 15.
• M – Mature: not recommended for people under 15, but not legally restricted.
• MA15+ – Mature Accompanied: legally restricted; under-15s must be accompanied by a parent or adult guardian.
• R18+ – Restricted: legally restricted to adults.
• X18+: restricted to adults; contains sexually explicit material and is only available in certain territories.

Why Does the Same Film Get Different Ratings?

Every country weighs content differently. Broadly, the US system has historically been stricter on sex and strong language than on violence, while the BBFC pays close attention to dangerous imitable behaviour, discrimination and sexual violence. A film rated PG-13 in the US might be 12A or 15 in the UK, M in Australia and 14A in Canada. The reasons published with each rating help explain the gap.

A quick cross-country comparison

• Family viewing: G (US), U (UK), G (Canada), G (Australia).
• Teens with guidance: PG-13 (US), 12A or 12 (UK), PG or 14A (Canada), M (Australia).
• Older teens and adults: R (US), 15 (UK), 14A or 18A (Canada), MA15+ (Australia).
• Adults only: NC-17 (US), 18 (UK), R (Canada), R18+ (Australia).

These groupings are approximate. Always check the actual rating and reasons for a specific film.

What About Streaming and TV?

Streaming services usually show the local official rating where one exists, or their own maturity rating where it doesn’t. Most offer parental controls that let you block titles above a chosen rating and set a PIN for each profile. Set these up separately on every device and profile children use.

How Can Parents Check a Film Before Watching?

• Read the rating reasons. The BBFC, MPA, Classification Board and provincial websites list the specific issues, such as violence, language or drug use.
• Look for detailed guides. The BBFC publishes longer content advice for many releases.
• Watch the trailer together, noting that trailers are edited to be suitable for wider audiences.
• Know your child. Ratings are a guide; you know best what your family is comfortable with.

If you are heading to the cinema, our guide to IMAX vs Dolby Cinema explains which premium screen is worth the extra cost.

What Are the Key Takeaways?

• The US uses G, PG, PG-13, R and NC-17, set by the MPA.
• The UK uses U, PG, 12A, 12, 15, 18 and R18, set by the BBFC; 12A applies only in cinemas.
• Canada rates films by province; Quebec has its own G, 13+, 16+ and 18+ system.
• Australia’s G, PG and M are advisory; MA15+, R18+ and X18+ are legally restricted.
• Always check the reasons published with a rating, not just the letter.

Featured image: Auditorium at Gilda on an afternoon in January 2025, by JIP / Wikimedia Commons, CC BY-SA 4.0. Cropped, colour-graded and combined with MediaPavilion branding.

Sources

• Film Ratings (CARA) — Ratings guide (accessed 25 October 2026).
• BBFC — Our age ratings (accessed 25 October 2026).
• Consumer Protection BC — What the ratings mean (accessed 25 October 2026).
• Australian Classification — What are the ratings? (accessed 25 October 2026).