Audio Speed Changer
Speed up podcasts, slow down lectures or stretch a vocal — without changing the pitch.
Drop your audio file here
or click to browse a file
Pitch is preserved — speakers stay sounding like themselves
Playback speed
Below 1× slows it down, above 1× speeds it up. Pitch stays the same.
About this audio speed changer
Change how fast a recording plays without making the speaker sound like a chipmunk or a low-pitched ghost. The tool uses pitch-preserving time-stretching — so a 2× podcast still sounds like the host, just faster.
Useful for catching up on long podcasts, slowing a fast lecturer to a comfortable pace, transcribing an interview, or stretching a vocal sample for music production.
How to change audio speed online
- 01
Drop in audio
MP3, WAV, FLAC, OGG, M4A and other formats are accepted.
- 02
Pick a speed
0.5× to 2× in single-pass quality. Pitch stays the same.
- 03
Download the result
The retimed file is rendered and offered as a download.
Why use this speed changer
- Pitch-preserving time stretch
- Range from 0.5× (half speed) to 2× (double speed)
- Quick preset buttons: 0.75×, 1.25×, 1.5×, 1.75×, 2×
- Output keeps the same format as the input
- Free, private, no install
- No watermark, no signup, no length limit
Speed changer FAQ
Does the pitch change?
No. The time-stretch engine stretches the file in time without altering pitch — the speaker still sounds like themselves, just faster or slower.
What's the maximum speed?
2× in a single pass with the cleanest quality. If you need 3× or 4×, ask and we can chain stretch stages.
What's it best at?
Speech: podcasts, lectures, audiobooks, voice memos. Music works too, but extreme stretches start to sound a bit phasey — for surgical music time-stretch you'd want a granular tool.
Will the audio be re-encoded?
Yes — time stretching requires re-encoding. The output uses the same format as the input at a sensible quality default.
More effects tools
Pitch, speed, vocals, bass