Want to listen to a podcast at 1.5× speed, slow down a song to learn an instrument part, or speed up a lecture recording? Changing audio speed lets you adjust playback rate without distorting pitch. QuickToolz does it free, in your browser — no app to download.
How to Change Audio Speed in 3 Simple Steps
Step 1
Upload your
audio file
0.5×
1×
2×
Step 2
Set speed
multiplier
Step 3
Download
adjusted audio
- Upload your audio file – Drag and drop or click to upload your MP3, WAV, AAC, or OGG file.
- Set the speed multiplier – Use the slider to choose your speed: anywhere from 0.5× (half speed) to 2× (double speed). Common choices are 1.25×, 1.5×, or 0.75×.
- Download the adjusted audio – Click “Apply” then “Download” and your audio plays at the new speed.
→ Try Change Audio Speed free — no account needed
Does Changing Speed Affect the Pitch?
No — QuickToolz uses time-stretching technology to change the speed without altering the pitch. Voices won’t sound chipmunk-fast at 2× or unnaturally deep at 0.5×. The audio remains natural-sounding at any speed within the supported range.
Why Would You Speed Up Audio?
Listening to podcasts or lectures at 1.25× or 1.5× speed is one of the most popular productivity habits — you consume the same content in significantly less time without losing comprehension. Many people find speeds up to 1.75× perfectly comfortable after a short adjustment period.
Why Would You Slow Down Audio?
Slowing audio down is useful for learning music — you can slow a guitar solo or piano piece to 0.5× to hear each note clearly before trying to replicate it. It’s also helpful for transcription work, language learning, and analyzing speech patterns.
What Speed Range Is Supported?
QuickToolz supports speeds from 0.25× (quarter speed) to 4× (quadruple speed). For speech content, 0.5× to 2.5× is typically the practical useful range.
What Formats Are Supported?
MP3, WAV, AAC, and OGG. Output is saved in the same format as the uploaded file.