Upload a track and shift its fundamental tuning — from standard 440 Hz to 432 Hz, 528 Hz, any Solfeggio frequency, or a custom target. Runs entirely in your browser. No upload to any server. Free.
MP3 · WAV · OGG · FLAC · M4A · any format your browser supports
This tool uses the Web Audio API's playback rate control. When you shift from 440 Hz to 432 Hz, the ratio is 432/440 = 0.9818. The audio plays back at that speed ratio, which lowers both pitch and tempo proportionally — like adjusting a turntable speed.
The 432→440 tempo change is 1.8% — across a 4-minute track, that's about 4 seconds difference. Below a 5% difference most listeners cannot detect the tempo change in isolated listening. For pure-tone content (binaural tracks, meditations, drones), it is completely imperceptible.
432 Hz — the most requested. When A4 = 432 Hz, middle C = 256 Hz (a power of 2). Many listeners subjectively prefer its warmth. Some studies show mild physiological differences vs 440 Hz.
528 Hz — the "Love frequency." Associated with emotional healing. Shifting a piece of music to a 528 Hz root places it in Solfeggio territory. Interesting for healing playlists and meditation content.
Solfeggio Hz — shifting music so its fundamental aligns with a Solfeggio frequency places it in the same sonic neighborhood as your binaural generator, reinforcing the overall frequency environment.
A note on quality: This tool uses playback-rate pitch shifting — the simplest, fastest, and most browser-compatible method. It changes pitch and tempo together in proportion. For tempo-preserving pitch shift (true pitch shifting without any speed change), a phase vocoder algorithm is required. If your workflow needs that — for music where tempo accuracy is critical — reach out and we can discuss a DAW plugin or server-side processing option.