One Piece Anime adaptation rate by Arc - Average no. of Chapters

One Piece Yearly Chapter Releases : r/OnePiece

Made a chart comparing number of episodes to number of chapters for each arc with the percentage of the series that the arc has taken up. : r/OnePiece

One Piece (TV 1999) - Anime News Network

Egghead Arc on anime : r/OnePiece

How close behind is the One Piece anime to the One Piece manga? - Quora

What's the difference between a chapter of One Piece and an arc? There are only 9 arcs but 1,000 chapters. - Quora

Onigashima - News - IMDb

List of One Piece Episode to Chapter Conversion

The Pacing of the One Piece Anime Over the Years (In Average Chapters Per Episode)

One Piece (Anime), One Piece Wiki