Easy - 0.5 - 5.2
Normal 5.2 - 8.7
Hard 8.7 - 15.4 (Speedcore 9.3 - 12.4)
Insane 15.4 - 20.4
Extreme - 20.4 - 24.6
Expert - 24.6 - 35.2
Hardcore - 35.2 - 35.3

Extremecore difficullties

Hypercore - 35.3 - 45.3
Expert++ - 45.3 - 53.4


Insanitycore (songs over 20 notes per second)

Ultra 53.4 - 55.1
insanity 55.1 - 63

Impossible (songs over 60 notes per second)

Impossible 63 - 100.4
Mania 100.4 - 242

HYPERTONE (songs over 435 notes per second
Extratone 435 - 700 Notes pwer second
Extremetone 700 - 900 Nps

(above this is nearly impossible to process or chart)

Ultratone 1000 - 3000 Nps
Nil 3000 - 5675 Nps
(impossible to process as a map)
Insanitycore 5675 - 7000 Nps
Terrorcore 7000 - 15025 Nps

(Impossible to chart

Hypertone 15025 - 8050025 Notes Pwer Second