Wave editor

Audio Cutter Lab

Audio tools

Cut, tune, and export audio in one place.

Each tool is separate — load audio in the one you want to use.

Trim Audio Precise cuts and fades Change Volume Boost or reduce gain Change Speed Tempo from 0.25x to 4x Reverse Audio Flip the full waveform

Drop an audio file here

WAV, MP3, M4A, OGG, FLAC, or WebM depending on browser support.

Choose file
File No audio
Duration 00:00.000
Selection 00:00.000

Waveform

Ready to trim

Import audio to view the waveform
00:00.000 / 00:00.000

About this tool

Change Audio Speed Online — Free Tempo Changer

Slow down or speed up audio without the chipmunk effect. Choose a tempo preset or fine-tune with the slider, preview, then export.

Does changing speed affect pitch?

No. Speed changes use pitch-preserving processing so voices and instruments stay natural.

What speed range is supported?

From 0.25x (quarter speed) to 4x (four times faster), with presets for common values.

Why does the first preview take a moment?

Pitch-preserving speed processing runs locally in your browser and may take a few seconds on longer files.