14 / PITCH
Change Audio Pitch
Raise or lower MP3 and WAV audio by semitones while keeping its pace. Compare the original and result, then download a new file on your device.
Your audio stays on your device. No server upload.
Adjust the settings and compare the actual result.
Each tool lists its supported formats and limits.
Change audio pitch without changing the pace
Transpose a recording up or down by whole semitones. The audio pitch changer moves every sound in the selected file, then compensates for the speed change with time stretching. Your exported recording keeps approximately the same duration and pace. It does not identify the musical key or correct individual notes.
How to transpose an MP3 or WAV
- Choose a mono or stereo MP3 or uncompressed PCM WAV, at least one second long, up to ten minutes and 30 MiB.
- Enter a whole-number shift between −12 and +12 semitones, or choose a preset. Negative values lower pitch; positive values raise it.
- Choose MP3 or 16-bit PCM WAV and create the audio.
- Compare the original and processed players at a comfortable volume. Check voices, sustained notes and transients.
- Download the result and keep the original separately.
What a semitone means
A semitone is one step in the twelve-step equal-tempered octave. +12 raises frequencies by a factor of two, while −12 halves them. +2 raises the recording by a whole tone. A 440 Hz test tone becomes approximately 880 Hz at +12 or 220 Hz at −12. The shift is relative: without knowing the original key, you cannot infer the resulting key just from the number entered.
Pitch, tempo and voice character
Changing pitch and changing speed are different tasks. This page compensates for the speed effect, keeping the recording's pace rather than deliberately making it longer or shorter. Small output-duration differences can remain because time stretching works on short waveform windows. For a longer or shorter recording with unchanged pitch, use Change Audio Speed.
Voice formants are not preserved independently. A raised voice can sound smaller or less natural, and a lowered voice can sound heavier. Percussion, consonants and layered music may develop artifacts, especially near the limits. Start with a small shift and listen before exporting a full recording. The tool does not offer automatic tuning, vocal isolation, harmony generation or studio-quality guarantees.
Export quality and storage
Every result is exported from your original file. MP3 encoding is lossy, and increasing the bitrate cannot restore source detail. WAV stores uncompressed 16-bit PCM and may be much larger. A 48 kHz input remains at 48 kHz; other accepted sample rates export at 44.1 kHz. Mono and stereo channel counts are retained. At zero semitones the pitch filters are bypassed, but export conversion still occurs.
Because duration remains approximately unchanged, pitch adjustment alone does not offer a reliable file-size reduction. Use MP3 compression for that goal, or estimate storage with the file size calculator. Read the bitrate guide before choosing an MP3 setting.
Pitch changer questions
Can I change only one part?
The shift applies to the whole file. Use Trim Audio to isolate a section first. Keep intermediate edits in WAV when practical to avoid repeated lossy MP3 encoding. You can assemble finished sections using Merge Audio, checking the transitions afterward.
Can I use M4A recordings?
This page accepts MP3 and PCM WAV. You can use M4A to MP3 first for AAC or ALAC recordings, but that adds a lossy export. Keep the original recording.
Are files uploaded?
No. The engine runs in your browser. Keep the tab open until processing finishes and save the result before leaving. Smaller files need less memory; if processing fails, try a shorter section.
Follow the pitch adjustment guide or browse all audio tools.