Lowest note: Bb2
Highest belt: F5
Highest note: A5
Vocal range: 2 octaves 6 notes 1 semitone
Vocal grade: B
Bruno Mars, being a tenor, has the ability to belt out notes in the 4th and 5th octave(See Locked out of Heaven) without showing signs of fatigue. He uses healthy technique and does not struggle as much when reaching to a note like F5 unlike other male singers.
His belts have a strange way of sounding flat and his belting range is not showcased much live. His notes get weaker quickly as it ascends from F5 onwards.
View his range here: