Free Audio Speed Changer.
Speed up or slow down any audio file instantly. Adjust playback rate from 0.25x to 4x, preview in real time, and download the result — all in your browser, no signup needed.
Your audio never leaves your browser. All processing happens locally on your device — no uploads, no servers, no data collection.
Upload an audio file to get started
How It Works
Drag and drop or click to upload any audio file (MP3, WAV, OGG, M4A, FLAC). Max 50 MB.
Use the slider or preset buttons to set your desired playback speed from 0.25x to 4x.
Listen to a preview, then download the processed file as a WAV with one click.
Why Use Our Audio Speed Changer?
Your audio never leaves your browser. All processing happens locally on your device — no uploads, no servers, no data collection.
Slow down audio to 0.25x for transcription or speed up to 4x for quick review. Fine-tune with a precision slider.
Hear how your audio sounds at any speed before downloading. Real-time playback with visual waveform display.
Export your speed-adjusted audio as a high-quality WAV file, ready to use in any video editor or audio project.
Frequently Asked Questions
Yes, 100% free with no limits. There is no signup, no watermark, and no usage cap. The tool runs entirely in your browser.
Yes, like a vinyl record, speeding up raises the pitch and slowing down lowers it. This is the standard behavior for an audio speed changer. If you want to change pitch independently, try our Free Voice Pitch Changer.
You can upload MP3, WAV, OGG, M4A, FLAC, and most other audio formats. The output is always a high-quality WAV file.
Absolutely. Your audio file is processed entirely in your browser using the Web Audio API. Nothing is uploaded to any server — your data stays on your device.
The tool supports audio files up to 50 MB. For larger files, consider trimming them first with our Free Audio Trimmer.