Calculate measure and note durations from a tempo and time signature.

BPM counts quarter notes per minute.
Time signature
For example, 6/8 contains six eighth notes per measure.

Measure duration

ms / s

Durations rounded to 3 decimal places in milliseconds and 6 in seconds. Each triplet note lasts two-thirds of its regular value; dotted notes last one and a half times their regular value.
NoteMilliseconds (ms)Seconds (s)