Change audio speed. Free.
Speed up a podcast or slow down a song, with the pitch kept natural, not chipmunked. No watermark, no signup.
Any speed
0.25× to 4×
Private
Processed on our engine
Temporary
Deleted after 1 hour
How it works
- 01
Add your audio
Drop in an MP3, WAV, M4A or any audio file, or click to browse. Uploaded privately over TLS.
- 02
Pick a speed
Speed it up or slow it down with a preset or the slider. The pitch stays natural.
- 03
Download
We re-time it with ffmpeg and hand it back in the same format. Deleted after 1 hour.
Related: Trim audio · Change video speed · MP3 cutter · Convert.
Common questions
Will it sound higher or lower pitched?+
No. We change tempo while keeping the original pitch, so a sped-up podcast or slowed-down song still sounds natural rather than chipmunk or droning.
Good for podcasts and lectures?+
Yes. Bumping speech to 1.25× or 1.5× is a popular way to get through recordings faster while staying clear.
What formats work?+
MP3, WAV, M4A, AAC, FLAC, OGG, Opus and more. The result comes back in the same format.
Is it free and private?+
Yes. No watermark, no signup. Uploaded over TLS, processed on our own engine, deleted after 1 hour.