Audio Speed Changer

Slow down or speed up audio from 0.5× to 2× while approximately preserving pitch. Upload, compare, and download without credits.

Free · no credits required · No installation

Choose your file

Drag and drop a file here, or choose one below.

MP3 · WAV · FLAC · M4A · AAC · OGG
Up to 25 MB · 10 minutes · mono or stereo

Your file uploads only when you start. Files are available for 24 hours, then scheduled for deletion. Existing upload limits apply.

Make it yours

Playback speed: 1×

0.5×–2×; tempo changes while pitch is approximately preserved. Slower output must stay within ten minutes.

Output format

Advanced settings

Bitrate

Channels

Server FFmpeg processing. Extreme changes can affect transients and sound texture. Keep your original and compare the result.

Three simple steps

01
Choose an audio file, or a video for Video to MP3.
02
Choose your settings and start. You will see the upload, queue and processing status.
03
Listen, download, or use the result in another EZAudio tool.

Frequently asked questions

Does speed change the pitch?

Tempo processing aims to preserve pitch; timing and texture can still change.

Where are my files processed?

These tools upload files for server processing. Files expire after 24 hours and are then scheduled for cleanup. Continue Editing remembers files in this browser tab until refresh. Processing does not use your credits.

Which formats and limits apply?

Audio input: MP3, WAV, FLAC, M4A, AAC and OGG. Video to MP3 accepts MP4, MOV, MKV and WebM with an audio track. Guests: 25 MB; signed-in users: 100 MB. Up to 10 minutes, mono or stereo. Audio outputs are MP3, WAV, FLAC, M4A and OGG; extraction and compression export MP3. OGG uses Opus at 48 kHz; other outputs use 44.1 kHz and does not preserve tags or artwork.

How this tool works

Best used for: Slow down or speed up audio from 0.5× to 2× while approximately preserving pitch. Upload, compare, and download without credits.
Processing method: Server FFmpeg processing. Extreme changes can affect transients and sound texture. Keep your original and compare the result.
What you get: A new audio file in your chosen format; the source stays unchanged.
Before you rely on the result: 0.5×–2×; tempo changes while pitch is approximately preserved. Slower output must stay within ten minutes.

Usage and file handling

Server processing uses no credits and has separate quotas: up to 10 minutes per file, 25 MiB for guests or 100 MiB when signed in. Uploading is required.

Credit and duration rules File privacy

Product information from EZAudio. About & content standards · Report a problem