--- title: "Pitch Shifter Online - Change Audio Pitch | CanDoYa" description: "Shift audio pitch online by semitones and cents while preserving tempo. Preview locally and download a private WAV with no upload or sign-up." url: https://candoya.com/tools/pitch-shifter/ locale: en type: browser-tool --- # Free Online Pitch Shifter Category: Social & Creator ## What does a pitch shifter do? A pitch shifter transposes music, vocals, or samples higher or lower without intentionally changing their tempo. Choose an audio file, move up or down by semitones, fine-tune in cents, and export a WAV. Processing happens locally in your browser, so your recording is never uploaded. This tool combines broad semitone changes with one-cent fine tuning. A shift of +12 semitones raises audio by one octave, -12 lowers it by one octave, and 100 cents equals one semitone. The frequency ratio follows equal temperament: `2^(total cents / 1200)`. Export loads FFmpeg WebAssembly only when you create the result. It changes the effective sample rate, resamples to 44.1 kHz, and applies inverse tempo compensation. The result stays close to the source length, but it does not independently preserve vocal formants. ## How to use it 1. **Choose your audio** - Drop an MP3, WAV, M4A, FLAC, OGG, AAC, or another common audio file into the tool. 2. **Set the pitch** - Pick a musical interval or move the semitone slider, then use cents for fine tuning. 3. **Create the shifted audio** - Start the local conversion and wait while the browser transposes the recording. 4. **Preview and download** - Listen to the result, download the WAV, or change the settings and try again. ## Who it's for - **Singers and cover bands** can move a backing track into a more comfortable key. - **Music students** can transpose practice recordings to match an instrument or tuning. - **Producers** can tune a sample toward the key of a project without opening a full DAW. - **Editors and voice creators** can test higher or lower character effects on a local recording. ## Expert note Moderate shifts of about one to five semitones usually sound more natural than a full octave. Tempo compensation preserves timing, but without formant correction a voice can still sound smaller when raised or larger when lowered. ## Frequently asked questions ### Is my audio uploaded? No. The source file, processing, preview, and result remain in your browser tab. The first export downloads the FFmpeg engine code, but your recording is not sent with that request. Refreshing or closing the tab releases the temporary local file URLs. ### Is this pitch shifter free? Yes. You can shift, preview, and download audio without an account, subscription, watermark, or usage credit. The practical limits are your device's available memory and processing speed because decoded audio and the WAV result are held locally. ### What pitch and file limits apply? Pitch ranges from one octave down to one octave up, with an extra -100 to +100 cents of fine tuning. The adaptive file cap is 100 MB on mobile or lower-memory devices, 250 MB on typical desktops, and 500 MB on high-memory desktops. ### Can I change pitch without changing tempo? Yes. The export applies inverse tempo compensation after shifting the sample rate, keeping the duration close to the source. This is different from simple tape-speed playback, where pitch and speed change together. Very complex audio can still show processing artifacts. ### What is the difference between semitones and cents? A semitone is one adjacent key on a piano in 12-tone equal temperament. One semitone contains 100 cents. Use semitones to transpose musical intervals and cents to match a slightly sharp or flat recording more precisely. ### Will vocals keep their natural character? Small changes often sound convincing, but this tool does not separately correct formants. Large upward shifts can make voices sound smaller, while large downward shifts can sound heavier. For exposed professional vocals, a dedicated studio pitch editor may produce cleaner results. ## Related tools - [Audio Speed Changer](https://candoya.com/tools/audio-speed-changer/) - [Audio Trimmer](https://candoya.com/tools/audio-trimmer/) - [Audio Normalizer](https://candoya.com/tools/audio-normalizer/) - [Tone Generator](https://candoya.com/tools/tone-generator/) - [Audio Waveform Image](https://candoya.com/tools/audio-waveform-image/) --- *Markdown edition of , published for AI agents and other automated readers. Index of key pages: .*