图图音频

Change audio speed — keep the pitch if you want

TutuAudio changes audio speed from 0.25× to 4×. Turn on "Keep pitch" and voices won’t go squeaky or deep — handy for exporting a lecture or audiobook at 1.5×. It runs in your browser with no upload; free, no sign-up. Big changes (below 0.5× or above 2×) cause audible artifacts.

Record

MP3, WAV, M4A, AAC, FLAC, OGG, WebM and the audio in MP4 videos

Everything runs in your browser — the file never leaves this device

Drop in a file, drag the speed slider, and with "Keep pitch" on, 1.5× still sounds like the same voice.

How it works

  1. 1

    Drag an audio file onto the page or click "Choose file"

  2. 2

    Set the speed (0.25×–4×) and turn on "Keep pitch" if needed

  3. 3

    Download the result as MP3 or WAV

FAQ

Will the voice sound higher or lower?
Not with "Keep pitch" on — only the tempo changes. With it off, faster sounds higher and slower sounds deeper, like a tape.
How fast or slow can it go?
From 0.25× to 4×. Below 0.5× or above 2× you’ll hear artifacts; for talks and podcasts, 1.25–1.5× sounds most natural.
Is my audio uploaded to your server?
No. The speed change runs in your browser; the file never leaves your device.
Is it free? Do I need an account?
Free, no account, no usage limits, and no watermark on the export.

Keep going with this audio

Similar tools

Not here? For text-to-speech and AI voices use TutuSound; to edit video or pull audio from video use TutuCut. All audio tools