Pitch Shifter Online

Pitch Shifter Online is a free browser tool for changing playback speed and pitch together. Like a vinyl record or tape machine, slowing audio down lowers the pitch, and speeding it up raises the pitch. It is designed for searches such as pitch shifter online, change audio key, slow down MP3, and music practice tool. Load an MP3, WAV, or M4A file, adjust the controls, preview the result, and save the processed MP3.

Singers can roughly test whether a song feels more comfortable at a higher or lower key. Musicians can slow fast phrases down for transcription while hearing the pitch change caused by the speed shift. Language learners can replay difficult passages slowly and then return to normal speed for review. The exported MP3 is useful for creating temporary practice files that you can listen to repeatedly.

Which Tool Should I Use?

Use this tool when you want a simple speed-linked pitch change. If you need to change tempo while keeping the original pitch, or shift pitch by semitones without changing speed, use the [Audio Time Stretch Tool](/en/audio/audio-time-stretch/). To inspect the resulting note or frequency, use the [Audio Pitch Detector](/en/audio/audio-pitch-detector/). To measure song tempo, use the [BPM Counter](/en/audio/bpm-counter/). If the source file is too quiet, prepare it with the [Volume Booster](/en/audio/volume-booster/) or [Audio Normalizer](/en/audio/audio-normalizer/) before processing.

Everything runs locally in your browser, so your audio files are not uploaded to a server. No account is required, and the tool is free to use on desktop or mobile.

Video files such as MP4, MOV, and WebM are accepted as well. Only the audio track is extracted and processed just like an audio file.