10 Free Online Audio Speed Changer Websites

Here is a list of 10 free online audio speed changer websites. It is easy to change the playback speed of an audio file. You can simply change the playback speed by changing the tempo. Many audio players have this feature built-in. While playing an audio file, you can change the playback speed. But this happens in real-time and you can not save that audio file with applied speed.

With these 10 websites, you can change the audio speed permanently and save the audio file with the selected playback speed. All you have to do is upload your audio file and then set the speed either using a slider or selecting a value. You can change the playback speed from as slow as 0.25x to all the way to 8.0x. Each website has a different range of speed. Some websites use percentage values for speed. Each website can play the audio with the new speed. You can listen to the resulting file and then download it with that same playback speed. Apart from audio speed, many of these websites can also change the pitch aka key of the music file. You can go through the list to check these websites and go with the one that suits your needs.

My Favorite Online Audio Speed Changer Website

MP3 Cut is my favorite online audio speed changer website. It offers a simple changer where you can change the audio speed (tempo) and key (tempo) of audio files. You get simple sliders that you can set accordingly to change the speed. In the end, you can pick the file format and save the resulting audio file. Apart from speed change, you can also cut the audio and set a custom equalizer. This website offers various audio tools, video tools, documents tools, and online converters.

You can also check out our lists of best free Online MP3 Joiner Websites, Online Song BPM Calculator Websites, and Online MP4 Converter Websites.

MP3 Cut

MP3 Cut is a free online audio speed changer website. This website offers many audio features in a simple user interface. It shows the waveform representation of the audio file so you can precisely seek audio forward and backward. Above the waveform, there are four features; Cut, Speed, Pitch, and Equalizer. The Speed feature shows a slider on the screen. You can use the slider to adjust the speed from 0.5x to 3.0x. Similarly, you can adjust the pitch as well. In the end, you can pick an audio format for the output. This feature can also be used to convert the audio file format.

How to change audio speed with this website?

Go to the MP3 Cut website and select “Speed Change” from the “Audio Tools” section.
Upload the audio file to change the speed.
After upload, click on the “Speed” feature from the upper left side of the waveform.
Adjust the speed slider to change the audio speed.
Select the format for the output and save the resulting file.

Highlights:

Audio waveform view
Change the speed of the audio files
Change the pitch of the audio files
Cut audio files online
Customize audio equalizer
Change the file format of the output file
Change the volume of the audio files
No batch processing and cloud import

Home Page

True Tone Guitar

True Tone Guitar is an education website offering online music lessons and tools. This website has a “Music Speed Changer” tool that you can use to change the audio speed of your audio files. It can change the speed and pitch of the audio files. The waveform representation gives you accurate control over the position. You can select parts of the waveform and cut those out of the track. While saving the file, you can pick an audio format of your choice and get the output file in that format.

How to change audio speed with this website?

Go to the True Toner Guitar website and select “Music Speed Changer” from the “Tools” section.
Upload the audio file to change the speed.
Adjust the Speed and Pitch slider as per your requirement.
Pick the output format and click on “Save” to download the output.

Highlights:

Waveform representation
Audio speed (tempo) changer
Audio key (pitch) changer
Cut segments from audio files
Apply changes to a specific part of the audio file
Convert audio file format

Home Page

Audio Speed Changer

Audio Speed Changer is a free website to change the audio speed online. It can independently change the playback speed (tempo) and key (pitch) of the audio. It is a nice tool for instrumental and vocal training. There are 4 simple steps to change the audio speed. You can change pitch in semitones and playback speed in percent. In addition to that, you can go with either with time-based or with the frequency-based method. Both these methods use different algorithms. If one method adds distortion or other types of disturbance then you can try the other one.

How to change audio speed with this website?

Go to the Audio Speed Changer website.
Upload the audio file. It can only convert one file at a time. Upload from local storage or fetch from Dropbox, OneDrive, and web via URL.
Select the playback speed change and/or the pitch change accordingly.
Select the output format and processing method.
Convert and download the output audio file.

Highlights:

Change the pitch (pitch) of audio files by semitones
Change the playback speed (tempo) of audio files by percentage
Convert audio file format to MP3 and M4A
Frequency-based and Time-based methods to change playback speed
Only process one file at a time

Home Page

Conversion-Tool

Conversion-Tool is a collection of free online converters for audio, video, image, document, ebook, etc. It also other tools for audio and video files including an “Online Music Pitch and Speed Changer”. This tool offers two algorithms to change the speed and pitch. None of these algorithms is superior to one another; it depends on the type of audio file. You can try both the algorithms and then pick the better one. This tool can also change the file format of the output. Before saving the file, you can pick an audio file format of your choice and download the file in that format.

How to change audio speed with this website?

Go to the Conversion-Tool website and go to Converters -> Audio Converters -> Online Music Pitch and Speed Changer.
Upload the audio file there.
Then pick the values of Speed and Pitch accordingly.
After that, pick a format for the output and the processing algorithm.
Start the conversion and download the resulting file.

Highlights:

Change the speed of audio
Change the pitch of audio
convert audio file to mp3 and m4a format
Two algorithm options for audio processing
No batch processing

Home Page

Audio Alter

Audio Alter is a collection of easy-to-use web tools for audio files. It offers a free Tempo Changer tool to make an audio file play faster or slower. It is a simple tool with a slider to change the speed. With the slider, you can change the from 0.5x to 2.0x. While changing the speed, it can preserve the pitch. There is a checkbox for that next to the slider. Apart from audio pitch changer, there are dozens of tools on this website for every type of audio need.

How to change audio speed with this website?

Go to the Audio Alter website and pick “Tempo Changer” from the Tools list.
Add your audio file to that tool.
Use the slider to change the speed of the playback.
Preserve the pitch if you want to by checking the checkbox.
Submit the file to process and download the output.

Additional Features:

3D Audio: Enhance the stereo sound by adding a 3D effect
Audio Panner: Make the audio alternative from left to right
Bass Booster: Boost the bass of the songs.
Equalizer: Adjust the frequencies of the audio
Noise Reducer: Reduce background noise from recordings
Reverb: Increase the room size of the audio
Reverse Audio: Reverse an audio file to make it play backwards and many more

Home Page

Music Speed Changer

Music Speed Changer is a free web app to change the audio speed online. This is the sole purpose of this app. Uploading the audio file to the app shows a playback screen. On that screen, you can adjust the tempo and the pitch of the audio. The tempo slide ranges from 25% to 250%. Whereas, the pitch slider ranges from -12 semitones to 12 semitones. You can also mark a specific section of the audio to create loops. In the end, you can download the output in mp3 file format.

How to change audio speed with this website?

Go to the Music Speed Changer web app using the link given below.
Upload the audio file there to get the audio controls.
Use the sliders to change the value of tempo and pitch independently.
Set loops to the audio file if you want to.
Click the save button to download the output.

Highlights:

Change the tempo and pitch of audio independently
Set loops in the audio file
Batch processing not supported

Home Page

Bfo Tool

Bfo Tool is a free website with a big collection of online tools to convert, modify, format, beautify, validate, and generate various types of files and data. It offers a free Audio Speed Changer tool to speed up and slow down the music. This tool can take mp3, m4a, and many other audio file formats as input. Once you upload the audio file, it shows 8-speed options. These options range from 0.25x to 8.0x. You can pick a speed option and apply it to the audio.

How to change audio speed with this website?

Go to the Bfo Tool website and select Tools -> Audio -> Audio Speed.
Upload an audio file or music file.
Choose the speed you want to convert up or slowly.
Click to change speed and download the output file.

Additional Features:

Online ASCII Converters: ASCII, Binary, Decimal, Hex, etc.
Online Encoder/Decoder: Adler32 Hash Online, bcrypt Hash Generator, Crc32 Hash Online, Crc32b Hash Online, Gost Hash Online, Haval Hash Online, etc.
Image Tools & Converters: Base64 to Image, Cropper Image, GIF to JPG, GIF to PNG, GIF To Video, ICO to Image, Image To Base64, Image To Black White, etc.
Music Tools: Audio Speed Changer, Resize Audio, and VIDEO to MP3.
Color Tools: CSS Gradient, HEX to CMYK, HEX to HSV, HEX to RGB, RGB to Hex, etc.

Home Page

Vocal Remover

Vocal Remover is a free online Vocal Remover and Isolation website that offers many other audio tools. It features a Tempo Changer that you can use to change the audio speed online. This tool can change the playback speed from 0.5x to 1.5x. In terms of tempo, the value ranges from 35 BPM to 105 BPM. You can slide the value and playback the resulting file. In the end, you can choose an output format and get the output file.

How to change audio speed with this website?

Go to the Vocal Remover website and pick the Tempo Changer tool from the left panel.
Upload the audio or music file there.
Adjust the slider to change the tempo as per your requirement.
Play the audio to review it.
Pick the output file format and download the file.

Additional Features:

Vocal Remover
Audio Cutter
Audio Joiner
Voice Recorder
Karaoke Recorder
Audio Converter
BPM Finder
Key Finder
Microphone test

Home Page

Audio Trimmer

Audio Trimmer is a collection of free online audio tools. It includes an Online Audio Speed Changer that you can use to speed up or slow down your music and audio files. This is a simple tool where you can upload the audio file and use a slider to change the speed. You can set the speed anywhere between 0.5x to 3.0x. After changing the speed, you can play the audio and check how it sounds. Once you are satisfied with the speed, you can download the final file.

How to change audio speed with this website?

Go to the Audio Trimmer website and select the Online Audio Speed Changer tool.
Upload the audio file to change the playback speed.
Use the slider to change the speed as per your liking.
Click on the “Change Speed” button to download the output.

Additional Features:

Online Audio Trimmer
MP3 Converter
Audio Reverser
Volume Booseter
Download Royalty-free music

Home Page

Online Tone Generator

Online Tone Generator is a free online tool to generate tones. It can play four different waveforms: Sine, Square, Sawtooth and Triangle. It comes with an Online Time Strecher tool that you can use to speed up or slow down audio files. It is quite simple with a slider that can change the speed down to 50% and all the way up to 200%. Apart from this speed changer tool, this website also has a pitch shifter tool that you can use to change the key of the music files.

How to change audio speed with this website?

Go to the Online Tone Generator website and select Online Time Strecher tool from the left side panel.
Upload your audio file there.
Use the slider to change the audio speed.
Tap on the 3-dot icon and download the final output.