Audio BPM Tap Tempo & Metronome
Tap to calculate song tempo in beats per minute (BPM), run a browser metronome, and calculate millisecond delay times.
| Note Duration | Straight (ms) | Dotted (ms) | Triplet (ms) | Hz (1/T) |
|---|---|---|---|---|
| Whole Note (1/1) | 2000.0 ms | 3000.0 ms | 1333.3 ms | 0.50 Hz |
| Half Note (1/2) | 1000.0 ms | 1500.0 ms | 666.7 ms | 1.00 Hz |
| Quarter Note (1/4) | 500.0 ms | 750.0 ms | 333.3 ms | 2.00 Hz |
| 8th Note (1/8) | 250.0 ms | 375.0 ms | 166.7 ms | 4.00 Hz |
| 16th Note (1/16) | 125.0 ms | 187.5 ms | 83.3 ms | 8.00 Hz |
| 32nd Note (1/32) | 62.5 ms | 93.8 ms | 41.7 ms | 16.00 Hz |
The Science of Tempo & Time Synchronization
Tempo is the pulse of musical energy. Whether producing commercial pop at 124 BPM or aggressive jungle breaks at 174 BPM, keeping time-based audio effects (delays, chorus, LFO modulation, tremolo, and reverb pre-delay) mathematically aligned with the master tempo is what gives modern electronic music its polished clarity.
Audio Production Workflows
- ✓Music Production & Beatmaking (Ableton, FL Studio, Logic)
Quickly dial in sample tempo, set session master BPM, and calculate exact millisecond delay and reverb pre-delay values for rhythmically locked mixes.
- ✓DJ Beatmatching & Harmonic Mixing
Determine the precise tempo of unanalyzed vinyl records or acoustic recordings to prepare seamless transitions and harmonic key mixing.
- ✓Live Band Rehearsal & Drummer Practice
Use the built-in Web Audio synthesized click track to establish consistent song tempos before kicking off live performances.
- ✓Audio Synthesis & LFO Rate Synchronization
Convert song BPM to precise hertz frequencies (Hz) for analog synthesizers, modular Eurorack rigs, and sidechain compression release times.
Key Capabilities
Accurate Rolling Average Engine
Smooths out human tapping variance across the last 16 taps to pinpoint exact tempo within fractions of a BPM.
DAW Delay Times Table (Milliseconds)
Calculates straight, dotted, and triplet millisecond delay lengths from whole notes down to 32nd notes.
Synthesized Web Audio Metronome
Zero-latency browser audio clicks with full volume mute and visual flashing beat flash cues.
Genre Style Classification
Automatically identifies where your tempo falls across Lo-Fi, Hip-Hop, House, EDM, Dubstep, and Drum & Bass spectrums.
Frequently Asked Questions
How do I use this tap tempo tool?
Simply tap the large button or press your keyboard's SPACEBAR in time with the beat of the music. After 3 to 4 taps, the calculator displays your exact tempo in BPM. If you pause for more than 2.5 seconds, the counter resets automatically.
How do you calculate delay time from BPM?
The formula for a quarter note (one beat) in milliseconds is: `60,000 / BPM`. For example, at 120 BPM, one quarter note is exactly 500 ms (`60,000 / 120 = 500`). An 8th note is 250 ms, and a 16th note is 125 ms.
What is the difference between dotted and triplet notes?
A dotted note lasts 1.5 times the duration of a standard straight note (`straight * 1.5`). A triplet note divides the duration of two beats into three equal parts (`(straight * 2) / 3`), creating a syncopated, swinging groove.
Why should reverb pre-delay be synchronized to tempo?
Setting your reverb pre-delay to a 32nd or 64th note of the song's BPM allows the upfront vocal or snare transient to cut through cleanly before the reverb tail blooms, preventing your mix from sounding muddy.
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