Watching all of One Piece as of 2025 would take a substantial amount of time due to its extensive episode count and length.

• There are currently over 1,126 episodes of One Piece anime, spanning 21 seasons and continuing to release new episodes weekly

• Each episode averages about 22 to 24 minutes in length, including opening and ending themes

• Based on these numbers, watching all episodes back-to-back would take roughly between 411 to 449 hours (about 17 to 19 days nonstop)

• If you include the 15 One Piece movies, that adds roughly another 22 hours, bringing the total to around 470 hours or nearly 20 days of continuous viewing

• Realistically, if you watch about 8 hours a day (similar to a full workday), it would take approximately 51 days to watch all episodes

In summary, watching the entire One Piece anime series from start to current episodes without breaks would take about 17 to 19 days nonstop, or about 1.5 to 2 months if watching 8 hours daily. Including movies extends this further. This is a massive time commitment reflecting the show's long-running status and vast content