Shift the pitch of audio up or down by semitones. Adjust from -12 (one octave down) to +12 (one octave up).
Drop audio file here or click to browse
Supports MP3, WAV, OGG, AAC, FLAC
Convert between MP3, WAV, OGG, AAC, and FLAC
Reduce audio file size with bitrate control
Change audio sample rate (8 kHz to 96 kHz)
Resize images with custom dimensions, percentage, or social media presets.
Convert between metric and imperial length units.
A semitone is the smallest interval in Western music — the distance between two adjacent piano keys. 12 semitones equals one octave.
With the current method, speed changes proportionally with pitch. A +12 shift doubles the speed. Future versions will add time-stretching.