Change the tempo of your music or voice recordings. Useful for practicing instruments, transcribing, or creating nightcore/slowed effects.
Privacy Protected
Audio Speed Changer
Speed up or slow down audio files without changing pitch (simple resampling). Free online tool. Fast, free, and 100% private. All processing happens locally.
Share Tool
Select Audio File
Privacy First • No Uploads • 100% Client-Side
Start Here
About Audio Speed Changer
1
Select Sound
Upload the MP3 or WAV file you wish to modify.
2
Adjust Tempo
Use the slider to increase or decrease the playback speed.
3
Export Audio
Download the processed audio file with your changes applied.
Key Features
Wide Range
Adjust speed from 0.5x slo-mo to 2.0x fast-forward.
Format Support
Works with MP3 and WAV files.
Client Side
Process audio securely in your browser.
WAV Export
Download the modified track as a high-quality WAV.
Frequently Asked Questions
Current implementation changes speed by resampling, which may affect pitch slightly depending on the method. We are working on pitch-preserving timestretch.
Related Tools
View allCompress Image
Reduce image size without losing quality.
Image Converter
Convert between JPG, PNG, WEBP, and BMP.
Resize Image
Resize images to custom dimensions.
Crop Image
Crop images to perfect proportions.
Image Filters
Apply filters and effects to images.
Color Picker
Extract colors from images.
Last updated on