Pitch Shift Audio Online Free — Change Pitch by Semitones

Pitch shifting is the process of changing the pitch (frequency) of an audio signal without changing its duration. This is different from changing the playback speed, which would also affect the tempo.

Pitch is measured in semitones — the smallest interval in Western music. There are 12 semitones in an octave:

• +1 semitone — raises pitch by one half-step (e.g., C → C#)
• +12 semitones — raises pitch by one full octave (e.g., C4 → C5)
• -5 semitones — lowers pitch by a perfect fourth (e.g., A → E)
• -7 semitones — lowers pitch by a perfect fifth (e.g., A → D)

1. Upload your file — drag and drop an MP3 or WAV file
2. Set the pitch shift — use the semitone selector or slider to choose your shift amount (−12 to +12)
3. Preview — click "Preview" to hear the pitch-shifted audio before exporting
4. Export — click "Export" to download the pitch-shifted file as WAV

The preview plays the pitch-shifted audio directly in your browser using the Web Audio API — no processing required for preview, making it instant.

• Key matching for DJs — shift a track's key to match the key of the next track for harmonic mixing
• Vocal practice — transpose a song to a key that suits your vocal range
• Sample manipulation — pitch shift samples to fit your music production project
• Remixing — change the key of a vocal or instrumental to match your remix
• Music education — transpose songs to different keys for ear training and practice
• Sound design — create pitch-shifted variations of sounds for creative effects

It's important to understand the difference between pitch shifting and tempo changing:

• Pitch shifting — changes the pitch (key) of the audio without affecting the tempo (speed). A 3-minute track at 128 BPM will still be 3 minutes at 128 BPM after pitch shifting.
• Tempo changing — changes the speed of the audio without affecting the pitch. A 3-minute track at 128 BPM could become a 3-minute track at 140 BPM.

WavinTools offers both tools separately — use the Pitch Changer for key changes and the Tempo Changer for speed changes.