Speed Changer
Speed up or slow down audio without changing its pitch.
Speed1×
Change audio playback speed from 0.25× to 4× without altering the pitch. Preview instantly in the browser using the Web Audio API's pitch-preservation, and use the speed dial gauge for precise control.
Key Features
Speed dial SVG gauge
An animated arc gauge shows your current speed from 0.25× to 4×.
Pitch preservation
Speed changes without pitch shift by default — toggle off for chipmunk/slow-motion effects.
Quick presets
One-click presets at 0.5×, 0.75×, 1×, 1.25×, 1.5×, 1.75×, 2×, 3×, 4×.
Fine control slider
A finely stepped slider lets you dial in any speed between 0.25× and 4×.
How to Use
- 1Upload an audio file.
- 2Drag the slider or click a speed preset button.
- 3Toggle "Preserve pitch" on or off.
- 4Click Play to preview at the selected speed.