Make an audio file play faster or slower.
Runs entirely in your browser.
Speed Up or Slow Down an Audio File
- Drop an audio file here or click to upload
- Supports MP3, WAV, OGG, M4A, FLAC
- Speed
About Change Audio Speed
Changing the speed resamples the audio, so a 2× file is half as long. Pitch rises and falls with the speed, the way it does on a record player at the wrong RPM - that is what resampling does, and it is usually what people mean by speeding audio up.
Holding the pitch steady while changing the speed is a different and much harder operation - it needs a phase vocoder to stretch time without moving frequencies - and is deliberately not attempted here rather than done badly. If you need speech to stay natural at a new speed, use an editor with proper time-stretching.
The result is exported as WAV, which is lossless, so re-encoding does not add another generation of compression artefacts.
Other Audio Tools
- Audio Cutter — cut a section out of a file
- Audio Joiner — join several files together
- Change Audio Volume — louder or quieter
- Audio Fade In and Out — smooth the start and end
- Loop an Audio File — repeat it into one file
- Audio to WAV Converter — convert any format to WAV
- Audio Metadata Viewer — inspect a file