Tap the tempo, take the delay times
Tap along to find the BPM, convert bars to seconds, and read the delay and modulation times for every note division — the table you would otherwise work out by hand at the start of each session.
Why the table is the useful part
A quarter note at 120 BPM is 500 milliseconds, and everything else on the grid follows from halving and doubling that. The arithmetic is trivial, which is exactly why doing it by hand mid-session is annoying: you want the number for a dotted eighth while the idea is still in your head, not a calculator and a moment to think. Set the tempo once and every division is on the screen.
Dotted and triplet, and where they are used
A dotted value is one and a half times its length, a triplet two thirds. Dotted eighth delay is the sound of a great deal of guitar music because it lands off the straight eighths and sets up a cross-rhythm against them. Triplets swing the other way — they subdivide the beat into three, which is why they make a straight arrangement feel like it is loping.
Tapping accurately
Tap on the beat rather than trying to be exact, and keep going: this averages the last eight intervals and throws out any that sit far from the middle, so one late tap does not drag the reading. The timer is the browser's high-resolution clock, not the wall clock, so it is not affected by the machine adjusting its time in the background. Stop for two seconds and it starts a fresh count.
Bars and seconds
Bars to seconds is bars × beats per bar × 60 ÷ BPM, which matters when you are cutting to picture or filling an exact thirty-second slot. Type into either box and the other follows. The beats per bar come from the time signature, so 32 bars of 3/4 is three quarters of the length of 32 bars of 4/4.
FAQ
Can I tap with the keyboard?
Yes — the space bar taps, and Escape resets. The button takes both clicks and touches.
Why does 6/8 give six beats per bar?
Because that is what it is on paper, and the conversion needs the written count. Conducted in two, a bar of 6/8 still contains six eighth notes; if you are thinking of it as two dotted-quarter beats, use the dotted quarter row in the table.
What is the Hz column for?
Modulation. A tremolo or filter LFO set in hertz rather than note values lines up with the track when you dial in the frequency for the division you want.
Is anything uploaded?
No. Nothing here leaves the page.
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