One Piece is a popular anime series that follows the adventures of Monkey D. Luffy and his pirate crew on their quest to find the One Piece treasure and become the Pirate King. With over 900 episodes and counting, it can be overwhelming for new viewers to know where to watch the anime online.

Fortunately, there are a few legitimate websites where you can watch One Piece anime episodes online for free. Here are some options:

1. Crunchyroll

Crunchyroll is a popular streaming service that offers a wide variety of anime, including One Piece. While not all episodes are available for free, Crunchyroll offers a rotating selection of free episodes that you can watch without a subscription. You can also sign up for a 14-day free trial to access all episodes and other features.

2. Funimation

Funimation is another streaming service that offers a large selection of anime, including dubbed versions of One Piece. While not all episodes are available for free, there are a few that you can watch without a subscription. You can sign up for a 14-day free trial to access all episodes and other features.

3. 9Anime

9Anime is a website that offers a huge selection of anime, including the entire One Piece series. The website is free to use and does not require you to sign up or provide any personal information. However, it is important to note that the website may not be legal and may contain pop-up ads and potentially harmful links.

4. KissAnime

KissAnime is another popular website that offers a vast selection of anime, including One Piece. Like 9Anime, the website is free to use but may not be legal and may contain harmful content. It is recommended to use ad-blockers and exercise caution when using this site.

5. AnimeDao

AnimeDao is a free streaming website that offers a selection of anime, including One Piece. The website is user-friendly and offers HD quality episodes. However, the website may not be legal and may have ads and pop-ups.

When watching anime online, it is important to use caution and ensure that the website is legal and safe to use. Using ad-blockers and avoiding suspicious links can help protect you from potential harm. With these websites, you can enjoy watching One Piece anime episodes online for free.