Change the key of a song without changing its speed
Move the pitch up or down by as many as 12 semitones while the length stays the same. Listen as you adjust, then save.
Drop audio to shift its pitch
A time-stretch keeps the tempo, so very large shifts can sound slightly processed.
MP3, WAV, M4A, OGG, OPUS, AAC, FLAC
Each step is one semitone. Twelve steps make one octave.
Last updated: · Written by Hassan Raza
What does a pitch shifter do?
A pitch shifter changes how high or low audio sounds without changing how long it takes to play. This tool moves the key from minus 12 to plus 12 semitones, in whole steps, and starts at plus 2. Twelve semitones equal one octave. The length of the file stays the same, because the tool stretches the audio to compensate for the pitch change. It runs in your browser, so the file is not uploaded, and you can save a 16-bit WAV or an MP3. The setting applies as you move the slider. Typical uses are matching a backing track to a singer's range, or making a voice higher or lower. It is free, with no account and no watermark.
How to use it
- Add the audio Drop a song, backing track or voice recording.
- Set the steps Use plus values to go higher and minus values to go lower.
- Save Choose WAV for full quality or MP3 for a smaller file.
Where the limits are
Small moves of one to three semitones sound natural. Past about six, the stretch can add a slight shimmer, and a voice may lose its natural character. If you want the tempo and the key to change together, like a tape, use the Nightcore Maker, or set Follow pitch in Speed and Pitch.
FAQ
Is there a daily limit?
No. The site sets no daily limit, no quota and no account requirement. The processing happens on your own device, so the only practical limit is the memory and speed of that device, especially for very long files. You must own the rights to the audio you process.
How many semitones should I move a song for a singer?
Count the steps between the song's key and the singer's comfortable range. Most people can shift a song by two or three semitones in either direction without strain. If the song is still too high or too low, try a larger step and listen for artifacts before you save.
Does it change the length of the file?
No. The result has the same duration as the original, because the tool compensates for the pitch change by stretching or squeezing the audio. If you want the length to change too, use Speed and Pitch, where speed and key are separate controls.