Dumbledore may have been a legendary wizard, but he can't be compared to, well, Merlin, a wizard so legendary even Muggles know of his exploits. Merlin was the world's most famous wizard, and, arguably, the world's most powerful.
Additionally, Snape is more skilled in potions than Dumbledore, making him a powerful contender for Albus's spot on the list. Albus, however, edges out Snape thanks to the former's greater base power, and deeper understanding of the complexities of “old” magic.
Hands-down, Albus Dumbledore was the most powerful wizard of his time. Most regarded him as the strongest wizard in history, and even Lord Voldemort himself feared to face him. Beyond his many impressive titles and positions of power, Dumbledore exhibited absolutely extraordinary abilities on several occasions.
Even when battling Voldemort, in Harry Potter and the Order of the Phoenix, Dumbledore never uses lethal magic. In the duel, Dumbledore is definitely on par with Voldemort, and Voldemort is seen to be annoyed that he can't overpower Dumbledore.
Albus Dumbledore is the most obvious person who can defeat Voldemort, outside of the Salazar Slytherin vs Voldemort debate, and the Dark Lord seemed to realize it. Rowling herself has explicitly stated in the books that Dumbledore is the only person Voldemort fears and recognizes as a genuine threat to his own power.
Lord Voldemort (Ralph Fiennes), aka Tom Riddle, was described by Dumbledore as one of the best students ever to graduate Hogwarts as well as "the most dangerous Dark wizard of all time." Before he had even learned about the existence of the Wizarding world, he was terrorizing his fellow orphans with impressive but ...
His exceptional magical abilities, immense knowledge of various branches of magic, and strategic thinking make him a formidable wizard. Dumbledore served as the Headmaster of Hogwarts School of Witchcraft and Wizardry, was a highly skilled duelist, and possessed incredible wisdom and intuition.
Nope. Dumbledore was widely considered to be the most powerful wizard of his time, if not all time outright. Lord Voldemort was the only wizard who ever rivalled Dumbledore in magical ability. And even though Voldemort could rival Dumbledore, that's all he could do.
While Dumbledore is a powerful wizard, Gandalf's innate magical abilities and experience in leadership and diplomacy give him an edge in a battle between the two. While the outcome of a battle between the two would depend on the circumstances, Gandalf would win more often than not.
He was the most accomplished at Legilimency. No one could prevent Voldemort from looking inside their mind. Expect Snape. This shows Severus' abilities against the Dark Lord, making it clear that Severus was the more superior of the two.
Magical Mastery: Minerva McGonagall was an incredibly powerful and talented witch whom none should have ever underestimated, being the most outstanding student of her year with a particular talent for Transfiguration, a remarkably complex field of magic which she proved to be an expert in, her magical skills being ...
Albus Percival Wulfric Brian Dumbledore was the only wizard Voldemort ever feared and the only one who could have defeated him in a duel. Albus Dumbledore is the most powerful wizard in the Harry Potter.
Godrick Gryffindor, one of the four founders of Hogwarts, and the owner of the legendary Sword of Gryffindor, was absolutely more powerful than Dumbledore— and it's a good thing he was, too, because Dumbledore wasn't around in Hogwarts' early days to keep Godrick's fellow founder Salazar Slytherin in check.
Albus Dumbledore
With or without the Elder Wand, Dumbledore is invincible in traditional wizard duels. Dumbledore has studied nearly every branch of magic in intimate detail, including obscure and unusual spells, and he could beat Harry with just one or two spells if they fought.
Grindelwald Is More Powerful and Cunning Than Voldemort
No one could possibly trick him in his mind, and of course, this leads to his undoing as Harry defeats him and reduces the wizard to nothing but ash. Grindelwald had more power in the Wizarding World up till the final moments of his life.
While most fans agree that Harry is the unrefuted Chosen One, the final Deathly Hallows film (in particular) sways heavily toward highlighting a heroic Neville, revitalizing the debate regarding which boy is better suited for the iconic title. "The one with the power to vanquish the Dark Lord approaches ...
Hagrid was born to a wizard father and a giant mother, making him a half-giant. As a half-giant, Hagrid possessed great physical strength and endurance, including a resilience against some spells, though his ability to withstand spells was not as great as that of full giants.
He wasn't decisively more powerful than Voldemort. Instead, what makes the focus on Grindelwald so exciting is that he was probably more dangerous than Voldemort -- a notion that has everything to do with his relationship with an unequivocal good guy: Albus Dumbledore.
We would have to give the victory to Darth Vader. While the two dark lords seem perfectly matched on their villainy and power, Darth Vader's lightsaber and ability to immediately use the force to choke Voldemort, without chanting any spell would end this showdown in seconds.
House-elves could perform magic beyond that of a wizard
Dobby frequently demonstrated himself to be immensely powerful, causing Lucius Malfoy himself to back down with just a point of his finger.