Drop in a song. It finds the pulse and warps every beat onto a flawless tempo grid at your BPM — rock-solid timing, pitch untouched, zero drift.
no install · no account · wav mp3 flac ogg m4a · export wav or mp3
Drag in any audio file. It decodes instantly and shows the waveform, ready to quantize.
A spectral-flux onset detector and dynamic-programming beat tracker map every beat and estimate the tempo automatically.
A phase vocoder pins each beat to a perfect grid at your target BPM — pitch preserved, no drift — then you export a clean WAV.
A phase-vocoder time-warp changes timing without touching pitch — no chipmunk, no detune, even on big tempo moves.
Beats are pinned to a mathematically even grid, so a four-minute track is as tight at the end as it is at the start.
Librosa-style onset + tempo analysis nails the pulse on anything with a steady groove.
The heavy DSP runs on a background thread, so the interface stays responsive and never freezes while it works.
Beat detection and warping happen automatically. Download the result as a clean 16-bit WAV or a 320 kbps MP3, ready to drop straight into your session.
Yes — it's completely free to use. No account, no sign-up.
No. The phase-vocoder time-warp stretches timing while preserving pitch, so even large tempo changes won't detune vocals or instruments.
Common with beat detection. Just type the BPM you actually want into the Target BPM field — the grid is built from your target, not the detected value.
Anything we can decode: WAV, MP3, FLAC, OGG and M4A. Export as 16-bit WAV or 320 kbps MP3.
Drop in a file and hear the difference in under a minute. Free to use — no account, no card.
Launch Beat Quantizer