Work out note duration instantly with clear inputs, formula shown and shareable results.
A note of value v lasts four over v quarter notes, each quarter note being 60000 divided by the tempo, and a dot adds half the note's own length. Dotting adds exactly 50%, so a dotted eighth at 120 bpm is 375 ms, which is why dotted-eighth delay is such a recognisable effect.
Note duration
milliseconds = 60000 / tempo x 4 / note value
Dotted note
dotted duration = plain duration x 1.5
milliseconds = 60000 / tempo x 4 / note value. A note of value v lasts four over v quarter notes, each quarter note being 60000 divided by the tempo, and a dot adds half the note's own length.
Dotting adds exactly 50%, so a dotted eighth at 120 bpm is 375 ms, which is why dotted-eighth delay is such a recognisable effect.
Enter tempo, note value, dotted. The defaults shown are a realistic worked example — swap in your own figures to get a result you can use.