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🎼 Audio Pitch Changer
Shift audio pitch up or down by semitones without changing playback speed. All processing runs in your browser.
Upload Audio
🎼
Drop an audio file here
or click to browse — MP3, WAV, OGG, FLAC, AAC, M4A supported
Preview Original
Choose Pitch Shift
Semitones (half steps) — negative = lower pitch, positive = higher pitch
0 st
Upload an audio file to get started.
About This Tool
This tool uses FFmpeg.wasm with the asetrate + aresample + atempo filter chain to shift audio pitch while keeping the original playback speed unchanged. Each semitone corresponds to a frequency ratio of 21/12 ≈ 1.0595. All processing is done locally — your file is never uploaded.
🎵 MP3 · WAV · OGG · FLAC · AAC · M4A
🎼 −12 to +12 semitones
⏱ Speed unchanged
✓ Zero server transmission