Ruggi.SiteBPM delay calculator
Turn a tempo into delay and reverb pre-delay times for straight, dotted and triplet notes, tap a tempo, convert BPM to milliseconds and samples, size bars to a song length, and practise with a metronome.
Tempo to delay and reverb times
| Note value | Straight, ms | Dotted, ms | Triplet, ms | Straight, Hz | Samples (straight) |
|---|
ms = 60000 / BPM x factor; the factor for a quarter note is 1, a whole note 4, dotted x 1.5, triplet x 2/3. Hz = 1000 / ms, useful for LFO rates synced to tempo. A common starting point for reverb pre-delay is a 1/32 to 1/64 note (a rule of thumb; trust your ears).
Tap tempo
Tap the button or press the space bar
Averages your last 8 taps; a pause longer than 2.5 seconds starts a new measurement. The space bar works when no text field is focused.
BPM, milliseconds per beat and samples
Bars and song length
BPM is taken as quarter notes per minute; a bar of n/d lasts n x (4 / d) quarter notes (so 6/8 is 3 quarters). Some musicians count 6/8 in dotted quarters; convert your BPM first if so.
Metronome
Uses the browser's audio clock, so timing does not drift while the tab is active. Sound starts only when you press Start and stops fully when you press Stop. Background tabs may be slowed down by the browser.