Fred's death is on page 637 of the book Harry Potter and the Deathly Hallows.
An excerpt from Pottermore.com reads:
During the Battle of Hogwarts, it’s almost too much for Harry to bear to look at the bodies of his fallen friends – Fred Weasley in particular. He’s plagued with the thought that if he had given himself over to Voldemort, this might not have happened.
On the anniversary of the battle in 2015, J.K. Rowling tweeted how sorry she was at writing Fred’s death and all of the sadness came flooding back. Even now, many years on, his death is too much for words. His exciting young life cut short; the very notion of George without Fred; the dreadful effect on his parents and siblings. How can this possibly be?
Fred dies with a ‘laugh still etched upon his face’; we can barely see through our tears. In the film of Deathly Hallows, Ron breaks down as we see Molly stroking his forehead, desperately needing to comfort him. It is all kinds of devastating, all at once.
For a general summary to chapter summaries to explanations of famous quotes, refer to SparkNotes Harry Potter and the Deathly Hallows Study Guide.
Trending Now: Harry Potter turns 20! Check out the 20 things we have learned, featured on The Guardian.