Free Pitch Shifter & Audio Speed Changer

Easily transpose the musical key or adjust the tempo of your original audio tracks.
Export your manipulated audio as a high-quality WAV file instantly.

Online Pitch & Tempo Adjustment Tool

Manipulate the pitch and speed of your royalty-free samples and voiceovers independently directly in your browser without sacrificing privacy.

What is Pitch Shifting & Time Stretching?

Our Free Pitch & Speed Changer is an advanced audio manipulation tool. Pitch shifting allows you to transpose the musical key of a track up or down by semitones, changing the tone without altering the length. Time stretching (Speed) allows you to slow down or speed up the BPM (tempo) of the audio. By doing this locally in your browser, your original compositions remain 100% secure as no files are ever uploaded to a remote server.

How to change audio speed and key?

Upload your audio file, such as a WAV or MP3. Use the Pitch slider to raise or lower the tone in semitones (e.g., +2 semitones to change a C major to a D major). Use the Speed multiplier to adjust the tempo (e.g., 1.5x for faster, 0.8x for slower). You can preview the changes in real-time. Once your track sounds perfect, click Export to render and download a studio-quality lossless WAV file.

Who uses this tool?

This browser-based tool is heavily utilized by independent music producers to tune their royalty-free vocal samples to match the key of their beats. It is also an essential utility for podcasters who want to speed up long, slow original interview recordings, and video editors adjusting the tempo of their background music to perfectly fit a scene's duration.

How to Change Pitch and Speed in 3 Steps

Step 1

Upload Audio

Select your original royalty-free track or voiceover. We support MP3, WAV, M4A, and FLAC formats.

Step 2

Adjust Pitch & Speed

Use the sliders to transpose the musical key (semitones) or change the tempo multiplier (speed).

Step 3

Preview & Export

Preview your changes in real-time, then click Export to download your studio-quality WAV file.

Select Audio File

Supported formats: WAV, MP3, M4A, OGG, FLAC

Recommendation: For the best experience, use headphones. If you are on a mobile device without headphones, make sure your device is not on Silent/Mute mode.
Loading audio... Please wait
Total Duration: 00:00

Adjustments

Slower (0.5x) Faster (2.0x)
Lower (-12) Higher (+12)
Pitch & Speed Compensation Guide

When you increase or decrease the Speed, the original Pitch (Key) of the audio changes naturally. If your goal is to change the speed but keep the original key, use the table below to compensate by adjusting the Pitch slider.

If you set Speed to: Change Pitch to: If you set Speed to: Change Pitch to:
1.06x-1 0.94x+1
1.12x-2 0.89x+2
1.19x-3 0.84x+3
1.26x-4 0.79x+4
1.33x-5 0.75x+5
1.41x-6 0.71x+6
1.50x-7 0.67x+7
1.59x-8 0.63x+8
1.68x-9 0.59x+9
1.78x-10 0.56x+10
1.89x-11 0.53x+11
2.00x-12 0.50x+12

Export Modified Audio

Pro Tip: Need your file in .MP3 format? Export as WAV here, then use our fast converter.
WAV to MP3 Converter

Frequently Asked Questions

Is the Pitch & Speed Changer really free?
Yes. This online audio pitch shifter is completely free, requires no signup, and has no daily limits. You can process and export as many original tracks as you need.

Are my audio files safe and private?
Absolutely. All time stretching and pitch manipulation is performed locally within your web browser's memory. Your private audio files and original recordings are never uploaded to any external servers.

Can I use this to modify copyrighted songs?
No. This tool is strictly designed for music producers, video editors, and podcasters to modify their own original compositions, royalty-free samples, and personal recordings. Please respect copyright laws.

What is Pitch Shifting?
Pitch shifting changes the musical key or tone of a sound (making it sound deeper or higher, like a chipmunk) without necessarily changing the speed of the track. It is measured in semitones.

What is Time Stretching (Speed)?
Time stretching allows you to speed up or slow down the tempo of your audio. Depending on your settings, you can change the speed independently, meaning a voice won't sound like a cartoon just because you sped it up.

Will I lose audio quality after exporting?
No. Once you've applied your pitch and speed settings, the tool generates a pristine, uncompressed WAV file, ensuring you maintain the absolute best audio fidelity for your studio projects.