Audio Speed and Pitch Changer

Change speed, pitch and volume together and hear the result.

Your files are processed on your device and are never uploaded.

Change the speed, the pitch and the volume of any audio file together, and hear every change live before you download. Speed goes from 0.5× to 2×, pitch moves in semitones, and you choose whether pitch stays fixed or follows the speed.

Audio Speed and Pitch Changer with ShrinkBee

It is useful for practising music, transcribing interviews, making nightcore or slowed and reverb edits, fixing recordings that play at the wrong speed and creating voice effects.

How to Use It

  1. Choose a file: MP3, WAV, M4A, OGG – or a video, and its sound is used.
  2. Set the speed: Tap 0.5×, 0.75×, 1.25×, 1.5× or 2×, or drag the slider for any value in between.
  3. Choose the pitch behaviour: Tick Keep the original pitch for natural sound, or untick it so the pitch rises and falls with the speed.
  4. Shift the pitch: Move it up or down in semitones. Pick the original key to see the new one.
  5. Listen – changes play live, so you can adjust until it sounds right.
  6. Download the new file.

Semitones and Keys

A semitone is the smallest step in Western music – one piano key. Twelve semitones make an octave. Moving a song down 2 semitones takes it from E to D, a common change for singers whose voice is lower than the original. Up 12 or down 12 keeps the same key, one octave higher or lower. Small shifts of 1–3 semitones sound natural; large shifts make voices sound unnatural, which can be used as an effect.

Popular Speed Settings

  • 0.5× – 0.75×: Learn a fast guitar solo, dance routine or language lesson.
  • 0.8× with pitch following: The "slowed" sound of slowed and reverb edits.
  • 1.25× – 1.5×: Get through podcasts, lectures and audiobooks faster.
  • 1.25× with pitch following: The bright, fast nightcore style.

Free and Private

All processing happens in your browser – your audio is never uploaded. Add space to a slowed track with Add Reverb to Audio.

Change Speed Change Pitch Add Reverb to Audio Audio Equalizer Cut Audio

Frequently Asked Questions

How do I slow down a song without changing the pitch?
Choose the song, set the speed below 1× – for example 0.75× – and keep Keep the original pitch ticked. Then download.
How do I speed up audio?
Pick 1.25×, 1.5× or 2×, or drag the speed slider. Keep the pitch option ticked so voices still sound natural.
How do I make a slowed or nightcore version?
Untick Keep the original pitch. Slow down to about 0.8× for a slowed edit, or speed up to about 1.25× for nightcore.
How do I change the key of a song?
Move the pitch up or down in semitones. Each semitone is one key step – down 2 semitones takes a song from E to D. Pick the original key and the tool shows the new key.
Does changing the pitch change the speed?
No. The pitch is shifted while the tempo stays the same.
Does it work with video files?
Yes. Choose a video and its soundtrack is changed and saved as audio.
Will quality suffer?
Small changes sound natural. Very large changes – such as 0.5× speed with fixed pitch, or shifting by many semitones – can add a slightly metallic sound.
Is Change Audio Speed & Pitch free to use?
Yes. Change Audio Speed & Pitch is completely free, with no sign-up, no watermark and no limit on how many times you use it.
Are my files uploaded to a server?
No. Your files are processed directly in your web browser on your own device. Nothing is uploaded or stored, and the file is gone from memory when you close the tab.

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Made With ♥ By ShrinkBee