Online Pitch & Tempo Adjustment Tool
Pitch and speed are set independently here: you can transpose a song by a few semitones and keep its tempo, or speed up a recording and keep the voice at its normal pitch.
What Can You Do with the Pitch & Speed Changer?
- Change the key: move the pitch up or down by up to 12 semitones (one octave). The length and the tempo stay the same.
- Change the speed: play the audio at 0.5x to 2x. The pitch stays the same, so voices do not turn deep or squeaky.
- Do both at once: for example, slow a song to 0.8x to practice it and lower it two semitones to suit your voice.
How Far Can You Go?
Small changes sound the most natural. Up to about 3 semitones, or at speeds between 0.75x and 1.25x, most material stays clean. Beyond that, the processing becomes audible: voices sound thinner or heavier when they are shifted far, because their character moves with the pitch, and dense music can sound slightly grainy at extreme speeds. That is true of every pitch and tempo tool, so use the smallest change that does the job. If you want speed and pitch to change together, like a record played slower, use the Slowed + Reverb Maker instead.
Semitones and Intervals
| Semitones | Interval | Example |
|---|---|---|
| 1 | Minor second (half step) | C to C♯ |
| 2 | Major second (whole step) | C to D |
| 3 | Minor third | C to E♭ |
| 4 | Major third | C to E |
| 5 | Perfect fourth | C to F |
| 7 | Perfect fifth | C to G |
| 12 | Octave | C to the next C |
Who Is It For?
Singers moving a backing track into a comfortable key, musicians slowing down a passage to learn it, DJs and producers matching a sample to the key or tempo of a project, and podcasters or students speeding up a long recording. To find out which key and tempo a track has, use the BPM & Key Analyzer; to see which note a frequency is, the Frequency to Note Converter.