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Audio Time Stretch
Change audio playback speed without affecting pitch. Perfect for learning music, creating slow-motion effects, or speeding up audiobooks while maintaining natural sound.
Free to use, no watermarks, runs in your browser—nothing uploads to our servers
Files are processed locally in your browser using WebAssembly.
Playback speed multiplier (0.25x = 4× slower, 2.0x = 2× faster, 1.0x = original speed)
Use Cases
- • 0.5x-0.75x: Learning music, transcription, practice
- • 1.1x-1.25x: Faster audiobook listening
- • 1.5x-2.0x: Quick content review, efficient consumption
- • 2.0x+: Creative effects, time-lapse audio
Report a bug
If this tool misbehaves, share a quick summary so we can investigate. We include the tool URL automatically—no need to copy and paste.