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A Certain Magical Index watch order

Updated October 2026 · 9 seasons, 1 movie and 9 OVAs and specials · in release order

Short answer

Watch A Certain Magical Index in release order: A Certain Magical Index → A Certain Magical Index II → A Certain Scientific Railgun S → A Certain Magical Index III → A Certain Scientific Railgun T.

5

in the main story: 5 seasons

123

episodes

~49 h

to watch the main story

Optional: 3 seasons, 1 movie and 9 OVAs and specials (recaps, side stories and specials), marked below. A Certain Dark Item is airing now. Next: Toaru Kagaku no Railgun 4th Season.

Release order

  1. 1
    A Certain Magical IndexMain story

    TV · Fall 2008 · 24 ep · ~9 hours · score 3.5/5

    Watch onBilibili Crunchyroll Hulu Netflix Tubi

  2. 2
    A Certain Magical Index SpecialsSide story · optional, after A Certain Magical Index

    Special · Winter 2009 · 2 ep · ~15 minutes · score 3.3/5

  3. 3
    A Certain Scientific RailgunSide story · optional, after A Certain Magical Index

    TV · Fall 2009 · 24 ep · ~9.5 hours · score 3.8/5

    Watch onBilibili Crunchyroll Hulu Netflix Tubi

  4. 4
    Toaru Kagaku no Railgun: Motto Marutto RailgunSide story · optional, after A Certain Scientific Railgun

    Special · Winter 2010 · 2 ep · ~20 minutes · score 3.3/5

  5. 5
    Toaru Kagaku no Railgun: Entenka no Satsuei Model mo Raku Ja Arimasen wa ne.Side story · optional, after A Certain Scientific Railgun

    OVA · Summer 2010 · 1 ep · ~5 minutes · score 3.2/5

  6. 6
    Toaru Kagaku no Railgun: Misaka-san wa Ima Chuumoku no Mato desu karaSide story · optional, after A Certain Scientific Railgun

    OVA · Summer 2010 · 1 ep · ~35 minutes · score 3.6/5

  7. 7
    A Certain Magical Index IIMain story

    TV · Fall 2010 · 24 ep · ~9 hours · score 3.6/5

    Watch onBilibili Crunchyroll Hulu Netflix Tubi

  8. 8
    A Certain Magical Index II SpecialsSide story · optional, after A Certain Magical Index II

    Special · Winter 2011 · 2 ep · ~20 minutes · score 3.3/5

  9. 9
    A Certain Magical Index: The Miracle of EndymionSide story · optional, after A Certain Magical Index II

    Movie · Winter 2013 · ~1.5 hours · score 3.5/5

    Watch onBilibili Crunchyroll Prime Video YouTube

  10. 10
    A Certain Scientific Railgun SMain story

    TV · Spring 2013 · 24 ep · ~9.5 hours · score 4.0/5

    Watch onBilibili Crunchyroll Hulu Netflix Tubi

  11. 11
    A Certain Scientific Railgun S SpecialsSide story · optional, after A Certain Scientific Railgun S

    Special · Summer 2013 · 2 ep · ~20 minutes · score 3.4/5

  12. 12
    A Certain Magical Index IIIMain story

    TV · Fall 2018 · 26 ep · ~11 hours · score 3.3/5

    Watch onBilibili Crunchyroll Prime Video YouTube

  13. 13
    A Certain Magical Index III SpecialsSide story · optional, after A Certain Magical Index III

    Special · Fall 2018 · 2 ep · ~20 minutes · score 3.1/5

  14. 14
    A Certain Scientific AcceleratorSide story · optional, after A Certain Magical Index

    TV · Summer 2019 · 12 ep · ~5 hours · score 3.5/5

    Watch onBilibili Crunchyroll Netflix Prime Video YouTube

  15. 15
    Toaru Kagaku no Accelerator: Tobidase Ippou-san - Hachamecha KaishingekiSide story · optional, after A Certain Scientific Accelerator

    Special · Fall 2019 · 1 ep · ~10 minutes · score 3.1/5

  16. 16
    A Certain Scientific Railgun TMain story

    TV · Winter 2020 · 25 ep · ~10 hours · score 4.0/5

    Watch onBilibili Crunchyroll

  17. 17
    Toaru Kagaku no Railgun T: Motto Marutto RailgunSide story · optional, after A Certain Scientific Railgun T

    Special · Spring 2020 · 2 ep · ~20 minutes · score 3.3/5

  18. 18
    A Certain Dark Item Airing nowSide story · optional, after A Certain Magical Index

    TV · Fall 2026 · 12 ep · ~5 hours

  19. 19
    Toaru Kagaku no Railgun 4th Season UpcomingMain story

    TV · 12 ep

How long is A Certain Magical Index?

PartSeasons and moviesEpisodesWatch time
Main story5 seasons123about 49 hours
Everything released8 seasons, 1 movie and 9 OVAs and specials187about 72 hours

Watch time uses each season's and movie's episode length, or a typical length where we don't have one.

Where to watch A Certain Magical Index

A Certain Magical Index is officially on Bilibili and Crunchyroll (8 of 19), YouTube (7 of 19), Netflix (5 of 19), Hulu and Tubi (4 of 19) and Prime Video (3 of 19), counting its 19 seasons, movies and specials.

Services and regions change; the release order above links each season to its official pages. Where to watch A Certain Magical Index has the full list, free options included.

Is A Certain Magical Index finished?

No. A Certain Dark Item is airing right now, and Toaru Kagaku no Railgun 4th Season is announced.

Do I need to watch the A Certain Magical Index movies and OVAs?

Optional: A Certain Magical Index Specials, A Certain Scientific Railgun, Toaru Kagaku no Railgun: Motto Marutto Railgun, Toaru Kagaku no Railgun: Entenka no Satsuei Model mo Raku Ja Arimasen wa ne., Toaru Kagaku no Railgun: Misaka-san wa Ima Chuumoku no Mato desu kara, A Certain Magical Index II Specials and 7 more.

How many episodes does A Certain Magical Index have?

The main story is 123 episodes over 5 seasons, about 49 hours of viewing. With every optional extra it is 187 episodes (about 72 hours).

Where can I watch A Certain Magical Index?

Officially on Bilibili, Crunchyroll, YouTube, Netflix, Hulu and more. Availability depends on your region; each season and movie below lists its own services.

Related manga

Order and labels come from the relations in the AnimeHunt catalog (sequel, side story, summary, alternative version). Spot a mistake? Tell us.