Box Office Mojo has reported that the Demon Slayer – Kimetsu no Yaiba – The Movie: Mugen Train anime earned an estimated $19,542,227 in the United States in its opening weekend, with a US$12,213 per-theater average over 1,600 theaters. The film earned an estimated U$6,445,970 on Saturday and an estimated US$3,560,000 on Sunday. The film ranked at #2 in its opening weekend in the United States, behind the new Mortal Kombat film (US$22,515,000 in 3,073 theaters).
Demon Slayer – Kimetsu no Yaiba – The Movie: Mugen Train has the highest per-screen average in the United States since the Sonic the Hedgehog film over a year ago. The film earned an estimated US$9,536,257 in its first day at the box office in the United States and ranked #1 on Friday. Box Office Mojo estimates that the film has earned US$407,697,666 so far worldwide.
In comparison, the January 2019 U.S. theatrical release of Dragon Ball Super: Broly earned US$9.8 million in its first three days, and US$11.95 million in its first four days. Dragon Ball Super: Broly eventually earned US$30.7 million in the United States.
FUNimation Entertainment and Aniplex of America began screening Demon Slayer – Kimetsu no Yaiba – The Movie: Mugen Train in North American theaters on April 23, 2021, and will release the film digitally on June 22, 2021.