Precise Speed Control
Adjust from 0.25x to 4x with fine-grained control. Preset buttons for common speeds plus a precision slider.
Audio Speed Changer
Speed up or slow down audio files while preserving quality
Why Choose Our Free Audio Speed Changer?
Adjust your audio playback speed in seconds — no software to install, no account needed. Perfect for lectures, podcasts, music practice, language learning, and more.
- 100% free to use — no hidden fees or watermarks
- Works through your Magica conversation, with no separate tool interface to learn.
- Available through your Magica account.
- Speed range from 0.25x (quarter speed) to 4x (quadruple speed)
- Supports audio files AND video files (extracts audio)
- Preset speed buttons for quick adjustments
- Fine-tune with a precision slider (0.05x increments)
- Share the file with Magica in chat so the agent can process it for this workflow.
How to Change Audio Speed in 4 Easy Steps
- 01
Attach Your Audio
attach your audio file in the chat. We support MP3, WAV, AAC, FLAC, and even video files to extract audio from.
- 02
Choose Your Speed
Use preset buttons (0.5x, 0.75x, 1.25x, 1.5x, 2x) or fine-tune with the slider. See the estimated output duration instantly.
- 03
Select Output Format
Choose MP3 for smaller files or WAV for lossless quality.
- 04
Download Your Audio
Click 'Change Speed', then download your speed-adjusted audio file. Ready to use anywhere!
What Makes Our Audio Speed Changer Special
Fast Processing
Uses your device's Web Audio API for quick processing. No waiting for server uploads.
Complete Privacy
Your audio never leaves your device. All processing happens in your browser.
Multiple Format Support
Input MP3, WAV, AAC, OGG, FLAC, M4A, or extract audio from video files.
Who Can Benefit from Our Audio Speed Changer?
Whether you're studying, practicing music, or creating content, our speed changer makes it easy.
Students & Learners
Speed up lectures to save time or slow them down to catch every detail.
Podcast Listeners
Listen to podcasts at your preferred speed — 1.25x or 1.5x saves hours per week.
Musicians
Slow down complex solos to learn them note by note, then speed back up as you improve.
Language Learners
Slow down foreign language audio to better understand pronunciation and vocabulary.
Content Creators
Create time-lapse audio effects or dramatic slow-motion sound for video projects.
Transcribers
Slow down audio to make transcription easier and more accurate.
Frequently Asked Questions About Our Audio Speed Changer
Is this audio speed changer really free?
This workflow is available through Magica; access and usage follow your Magica plan.
Does changing speed affect the pitch?
Yes, this tool uses standard speed change which proportionally adjusts pitch. Speeding up raises the pitch, slowing down lowers it. This is the natural behavior and is ideal for music practice and most use cases.
What speed range is supported?
You can adjust speed from 0.25x (quarter speed, 4 times longer) to 4x (quadruple speed, 4 times shorter). The slider allows fine-tuning in 0.05x increments.
What audio formats are supported?
You can upload MP3, WAV, AAC, OGG, FLAC, M4A files, and even video files (MP4, MOV, WebM) to extract audio from. Output is available as MP3 or WAV.
How long does processing take?
It depends on your audio length and device speed. Most files under 10 minutes process in 15-45 seconds. You'll see a progress indicator while it's processing.
Is my audio uploaded to your servers?
No! All processing happens right in your browser using Web Audio API technology. Your audio never leaves your device, ensuring complete privacy.
What's the maximum file size?
We recommend files under 500MB for the best experience. Larger files may work but could take longer on some devices.
Can I use this on my phone?
Yes! Our speed changer works on smartphones, tablets, and computers. Just open it in your browser. Note that processing may be slower on mobile devices.
Ready to make it?
Help me use Audio Speed Changer. First ask me to attach audio and ask me to choose your speed. Then ask for my preferences, complete the task, and return the finished result.Attach filesConnect tools
