Both series are primarily light-hearted adventure-series, but they also both have some pretty serious moments. (Though in Dragonball, they're mostly in the last third of the series.) One Piece is also partially inspired by Dragonball.
Although both series are shounen and have a lot of fighting, both have also tons of adventuring through the world, meeting new people and places and both have a lot of comedy.
There is many similaries of Dragon Ball and One Piece. For example main characters are still eating something. Next is for example same style of humour, same style of battles, very similar animation, music...
They're both very liked and well-known
I recommend both of them
Funny enemies, funny fights, a lot of comedy and world travels with a group. One Piece, Dragon Ball, both are similar, of course, One Piece is inspired on Dragon Ball, Eichiro Oda is a big fan of Akira Toriyama and a big fan of your major work, dragon ball.
You Find many Dragon Ball's references in One piece. If you liked One Piece, watch dragon ball. You liked Dragon Ball, watch One Piece.
Both are great and fast-moving shonens about a goofy kid who has a beastly amount of fighting power (as well as superpowers... kind of) that adventures around and makes friends and all of that typical stuff, as well as having a lot of humor and packing in a lot of fights.
Story wise these series are completely different. The main reason they are similar is due to the characterization and humor. The main characters of both are especially similar because, personality wise, Luffy and Goku are almost completely in sync. They both have a naive charm about them, they both think about food even at the oddest times, and they both go after what they think is right. Luffy is a bit more stubborn, but if you enjoyed either one of these series because of the main character you'll likely enjoy the other.
Epic battle's, friends and wonderful special attack's
Dragonball (just the original NOT Z, GT, or Kai. Although Dragon Ball Z is also good like One Pieace, not as good) is similar to OP in so many ways. The main character personality is very similar, the importance of all of the characters (whether they be minor or main characters), the attachment to all of the characters, the good voices and voice acting (in japanese), the good background music that is fit to every detail when it is played, the complicated storyline where everything ties together so well and everything makes sense together, and even the way that OP doesn't have a
there a lot of similarities between main characters, such as sense of humor, feeling friendship, some fighting techniques
Both have some great adventure and comedy. If you liked One Piece you definitely like DB. Both also have some awesome action. Also, One Piece is also partially inspired by Dragon Ball.
Both anime have a main character who almost always wins their fights and starts from being a nobody to someone known all over the world through fighting.
THE BEST , Adventures , the main characters are mainly the same , brilliant .
Both are awesome adventure animes with fantasy elements thrown in to the mix. One Piece is more focused at character development and background, while Dragonball lacks in this the humor and action makes up for it. It's not often that i laugh while watching something but i did quite a bit of it during these shows, if you like the humor of one you'll probably like the other aswell.
Similar light-hearted seriousness. Both take place in unique and unexplained worlds. Though, in One Piece, the mystery of their world is part of the main storyline, and in Dragon Ball, the origin of Goku is more of the mystery. Both move at a faster pace than, say, Dragon Ball Z, or, buh, Naruto. Vibrant and colorful animation in both. Consistent mix of comedy and dramatic action.
Similar colourful world and characters and same kind of story which authors seem to drag on forever.