Audio Speed Changer
Speed up or slow down any audio file from 0.25x to 3x. 100% free, no sign-up, processed entirely in your browser.
Drop your audio file here or click to upload
Supports MP3, WAV, OGG, FLAC, AAC — up to 500MB
How to Change Audio Speed Online
- Upload your audio file (MP3, WAV, OGG, FLAC, or AAC)
- Select your desired playback speed using the slider or preset buttons
- Click the process button and preview the result
- Download your speed-adjusted audio as a WAV file
Why Use Our Audio Speed Changer?
Whether you need to speed up a podcast for faster listening, slow down music to learn a tricky passage, or adjust audio for a video project, our free tool handles it all. Everything runs locally in your browser — your files are never uploaded to any server, so your audio stays private.
Frequently Asked Questions
How does the audio speed changer work?
Our tool uses the Web Audio API built into your browser to change the playback rate of your audio file. It processes everything locally on your device — no files are uploaded to any server.
What audio formats are supported?
You can upload MP3, WAV, OGG, FLAC, AAC, and most other audio formats supported by your browser.
What speed range can I use?
You can adjust the speed from 0.25x (very slow) to 3x (very fast). Common presets like 0.5x, 1.5x, and 2x are available for quick selection.
Is my audio file uploaded to a server?
No. All processing happens entirely in your browser using the Web Audio API. Your files never leave your device, ensuring complete privacy.
Will changing the speed affect the pitch?
Yes, this tool changes both speed and pitch together (like playing a record faster or slower). The pitch shifts proportionally with the speed change.
What is the maximum file size?
You can process audio files up to 500MB. Larger files may take longer to process depending on your device.
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