How Many Hours Is One Piece

As one of the longest-running anime series ever, it would take hundreds of hours to watch all of One Piece. Adapted by Toei Animation from the manga written and illustrated by Eiichiro Oda, One Piece debuted in 1999 and is still running over two decades later. With over a thousand episodes across 21 seasons so far, watching all of One Piece back-to-back would take days - though it’s a challenge many fans of Monkey D. Luffy and the Straw Hats would happily undertake.

The One Piece manga, which started in 1997 and is also still ongoing, contains 110 volumes so far. The anime series follows the on-page adventures of the Straw Hates closely, with the story having evolved far beyond its original scope of Luffy striving to become the King of the Pirates. The saga has expanded to cover 1,122 episodes between 22-24 minutes long each, so watching all of One Piece would require literal weeks.

Feature image with Luffy, Robin, and Luffy in the background defeated

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The One Piece Anime Is Over 411 Hours Long

It Would Take Over Two Weeks To Watch All Of One Piece

It would take over 411 hours to watch every single episode of One Piece back to back. This is a conservative estimate too, as it’s calculated based on each episode being 22 minutes (and some stretch to around 24 to 25). The 1,122 episodes of One Piece so far account for 24,684 minutes of swashbuckling anime adventure, which is just over 411 hours. Since some episodes are longer, however, it's likely longer.

One Piece Season	Title	Episode Count	Minutes/Hours To Watch*
1	East Blue	61	1342/22.3
2	Entering into the Grand Line	16	352/5.8
3	Introducing Chopper at the Winter Island	15	330/5.5
4	Arrival & Fierce Fighting in Alabasta	38	836/13.9
5	Dreams!, The Zenny Pirate Crew Sortie!, Beyond the Rainbow	13	286/4.7
6	Sky Island ~ Skypiea & The Golden Bell	52	1144/19
7	Escape! The Marine Fortress & The Foxy Pirate Crew	33	726/12.1
8	Water Seven	35	770/12.8
9	Enies Lobby	73	1606/26.7
10	Thriller Bark	45	990/16.5
11	Sabaody Archipelago	26	572/9.5
12	Island of Women	14	308/5.1
13	Impel Down	35	770/12.8
14	Marineford	60	1320/22
15	Fishman Island	62	1364/22.7
16	Punk Hazard	50	1100/18.3
17	Dressrosa	118	2596/43.2
18	Zou	36	792/13.2
19	Whole Cake Island	109	2398/39.9
20	Wano Country	197	4334/72.2
21	Egghead	34	748/12.4

*Presuming a 22 minute episode length.

Any fans wanting to embark on a back-to-back One Piece viewing marathon would need provisions, as it would take around two and a half weeks to complete (and that’s not factoring in breaks for eating and sleeping etc). One Piece could be played continuously 24 hours a day for 17 straight days and would still not be finished. If viewers were to watch for 8 hours a day, the length of a standard working shift at a 9-5, it would take around 51 days to watch the One Piece anime from East Blue (season 1) to Egg Head (season 21).

How Many Hours Netflix's One Piece Will Be If It Follows The Anime

The Live-Action One Piece Has A Lot Of Ground To Cover

Iñaki Godoy as Monkey D. Luffy smiling while leaning forward in One Piece season 1

The Netflix live-action One Piece TV series arrived in 2023, and is pretty close to the anime in terms of its story. However, this accuracy comes with a challenge for the streaming service. With so much story to adapt it’s difficult to imagine how Netflix will bring the entirety of the One Piece story to live-action, and how long it would take.

The live-action One Piece covers most of the East Blue saga (season 1 of the anime) in 8 hour-long episodes. Season 1 of the anime covered a little more of the same story in 61 episodes, meaning that the Netflix One Piece manages to (roughly) condense 7.5 episodes of the anime into each live-action one.

While it’s not an exact adaptation, this figure can be used to loosely work out how long the live-action One Piece will have to be to cover the anime. If each live-action One Piece episode covers 7.5 animated ones, and there are 1,122 in the anime, then Netflix’s adaptation will have to be at least 149 episodes long.

The live-action One Piece would have to include 149 hours of high-budget screen time (at the absolute minimum) to follow everything in the One Piece anime and stretch to over 18 seasons. If Netflix does follow the One Piece anime through in its entirety then the live-action version would likely become the longest-running (and most expensive) show the streaming platform has ever put out.