How long is Black Mass?

Black Mass is 2 h 3 min long (123 minutes). If you start it at 8:00 pm it ends at 10:03 pm; add about 20 minutes if you watch trailers first.

What is Black Mass rated?

Black Mass is rated R in the US.

Where can I stream Black Mass?

In the US, as of 2026-11-04: The Roku Channel (free with ads). Availability changes often; this page loads the live list for your country (streaming availability by JustWatch).

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Where to watch Black Mass (2015) tonight

Black Mass (2015) runs 2 h 3 min, is rated R in the US and averages 6.5 from 3,720 TMDB members. The true story of Whitey Bulger, the brother of a state senator and the most infamous violent criminal in the history of South Boston, who became an FBI informant to take down a Mafia family invading his turf.

Runtime: 2 h 3 min — ends 10:03 pm if you start at 8:00 pm
Rated: R (US)
Genres: Drama, Crime, History
Released: September 17, 2015
TMDB rating: 6.5 / 10 from 3,720 votes
Director: Scott Cooper
Starring: Johnny Depp, Joel Edgerton, Julianne Nicholson, Dakota Johnson
Language: English

Good for a group? Better for one or two who will actually watch.Drama and Crime reward attention; a room that talks over it will miss the point. Rated R in the US — check who is in the room.

Where to watch it tonight

Availability loads live for your country. See where Black Mass streams (JustWatch via TMDB) →

Streaming availability by JustWatch. In the US, as of 2026-11-04: The Roku Channel (free with ads).

Questions people ask

How long is Black Mass?: Black Mass is 2 h 3 min long (123 minutes). If you start it at 8:00 pm it ends at 10:03 pm; add about 20 minutes if you watch trailers first.
What is Black Mass rated?: Black Mass is rated R in the US.
Is Black Mass a good movie to watch with a group?: Better for one or two who will actually watch. Drama and Crime reward attention; a room that talks over it will miss the point. Rated R in the US — check who is in the room.
Where can I stream Black Mass?: In the US, as of 2026-11-04: The Roku Channel (free with ads). Availability changes often; this page loads the live list for your country (streaming availability by JustWatch).

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Black Mass on TMDB · This product uses the TMDB API but is not endorsed or certified by TMDB.

Lights Down is a free tool: tell it your streaming services and how long you have, and it ranks what you can stream tonight, with a this-or-that, a roll, a bracket and a wheel. Movie data from TMDB; streaming availability by JustWatch. Page updated 2026-11-04. This product uses the TMDB API but is not endorsed or certified by TMDB. Lights Down is a Somebody Decide program. How the data works · Legal & privacy · Tonight's lists