A fixing device includes a fixing roller including a heat generating part, an endless belt facing the fixing roller, a first supporter which supports the belt to cause the belt to face the fixing roller at a first position, a second supporter which supports the belt at a downstream side in the rotation direction of the belt to cause the belt to face the fixing roller at a second position, and a pressure applying member having a center position, configured to urge the belt toward the fixing roller to form a nip between the fixing roller and the belt, wherein a first distance between the center position and the first position is longer than a second distance between the center position and the second position.