Will changing speed change the audio pitch?

The browser Web Audio engine renders smooth sample-rate resampling. At 1.25x and 1.5x it is ideal for rapid podcast and voice lecture listening.

Can I slow down fast speech or music?

Yes, select 0.5x or 0.75x to slow down audio for easy transcribing or musical analysis.

Yes, 100% of the speed manipulation happens on your device inside your browser memory.

Audio 100% Client-Side

Speed up or slow down audio recordings from 0.5x to 2.0x directly in your browser.

Zero Upload

Never leaves browser

Instant Speed

WASM accelerated

MP3, WAV, OGG up to 50MB

Continuous speed slider from 0.5x to 2.0x

One-click popular listening presets

Lossless PCM WAV audio export

Direct browser Web Audio rendering

Simple Workflow

Get results in three quick steps without any learning curve.

Select any MP3, WAV, or OGG file.

Choose a multiplier from 0.5x (slow) to 2.0x (double speed).

Preview the altered speed and download the updated file.

Need Help?

Everything you need to know about this tool.

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