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Calculate delay and reverb times in milliseconds synced to tempo and BPM. Find quarter, eighth, and dotted note delay values for any song speed.
Convert between audio sample rates including 44.1 kHz, 48 kHz, 96 kHz, and 192 kHz. Check file duration and sample count when changing rates.
Calculate decibel levels, dB addition, voltage-to-dB conversion, and SPL at distance. Compare sound pressure ratios for audio and acoustics work.
One beat duration in ms equals 60 seconds divided by BPM, scaled to milliseconds.
ms per quarter note = 60,000 / BPMTap tempo records intervals between taps and averages them to estimate BPM. More taps improve accuracy on songs with slight tempo drift.
BPM = 60 / average interval between taps (seconds)Eighth notes are half a beat; dotted quarters are 1.5 beats. Multiply base ms by the note fraction for synced effects.
Eighth note ms = (60,000 / BPM) / 2Updated: July 2026
Tap quarter-note pulses for 8–16 beats on a house track to lock BPM near 128 for remix alignment.
120 BPM gives 500 ms per beat — set delay time to 500 ms for rhythmic echoes locked to tempo.
A beat at 140 BPM (428 ms) feels half-time against a 70 BPM grid — useful for trap hi-hat programming vs kick tempo.
Tap the main pulse — usually kick and snare grid — not subdivisions. Tapping eighths doubles the BPM reading.
Straight ms from 60,000/BPM fits quarter and eighth notes. Triplet delays need ×2/3 or dedicated triplet calculators for true sync.
Beats per minute (BPM) defines song tempo. Tap along with music to detect BPM instantly, or convert between BPM and millisecond note durations for delay, sidechain, and sample timing in your DAW.