Does changing speed also change the pitch?

Yes, speed and pitch move together, like a record player sped up or slowed down.

Can I slow audio down without making it sound too low-pitched?

This tool changes speed and pitch together like a classic tape or turntable effect; pitch-preserving time-stretch isn't currently supported.

What speed range is supported?

You can typically speed up or slow down audio within a wide range, roughly 0.5x to 2x, adjustable with a slider.

Does Audio Speed Changer upload my files to a server?

No. Audio Speed Changer runs entirely in your browser using on-device processing, your files never leave your device.

Audio Speed Changer

Speed up or slow down an audio file.

Runs in your browser

Drop an audio file here

Choose File

Runs entirely in your browser using an on-device audio engine. The engine downloads on first use, then it's cached.

About this tool

Speeding up a long recording to review faster, or slowing one down for careful listening, means changing playback speed properly — adjusting the actual audio, not just how fast your player happens to play it back. This tool speeds up or slows down an audio file, producing an actual file at the new speed rather than a temporary playback setting.

Frequently asked questions

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