How to use this audio tool
Change audio playback speed with FFmpeg's atempo filter.
How the audio logic works
- Choose an audio file.
- Select a speed multiplier.
- Download the processed WAV output.
Formula
New duration = original duration / speed multiplier.
Example
Turn a 10-second clip into about 5 seconds at 2x speed.
Using the audio result
Use the output as a practical starting point, then review it before using it in an important workflow.
Assumptions and limitations
- This V1 limits speed from 0.5x to 2x.
- Pitch behavior depends on the FFmpeg tempo filter.
Frequently asked questions
Does this require an account?
No. The core tool works without creating a Tool2Do account.
Is my input included in share links or analytics?
No. Tool2Do share actions use the tool page URL and safe metadata, not private values or uploaded files.