One hundred and thirty-eight bpm in milliseconds.

Musical note nameDuration in milliseconds
octuple note (8)13912
quadruple note (4)6956
breve (2)3478
semibreve (1)1739
minim (½)869.565
crochet (¼)434.783
quaver (⅛)217.391
semiquaver (¹⁄₁₆)108.696
demisemiquaver (¹⁄₃₂)54.348
hemidemisemiquaver (¹⁄₆₄)27.174
semihemidemisemiquaver (¹⁄₁₂₈)13.587
demisemihemidemisemiquaver (¹⁄₂₅₆)6.7935
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