Trim an audio file
Mark start and end on the real duration and download the fragment in the same format, with no quality loss (the cut does not re-encode).
Your files never leave your device
How to trim an audio file
- 1
Upload the audio
MP3, WAV, M4A, FLAC, OGG, OPUS and more.
- 2
Mark start and end
With the sliders or by typing the exact time.
- 3
Download the cut
Same format as the original, no re-encoding.
Why use this tool
Lossless
The cut copies the original data: there is no second compression.
Any format
Not just MP3: WAV, M4A, FLAC, OGG, OPUS or AIFF come out exactly as they went in.
Private
Your audio never leaves your device: ffmpeg runs inside your browser.
Real engine
ffmpeg, the industry standard, compiled to WebAssembly and self-hosted.
Frequently asked questions
Do I lose quality when trimming?
No: the fragment is copied without re-encoding. The only exception is raw AAC (.aac), which is re-encoded so the cut is reliable.
Is the cut millisecond-exact?
The cut lands on the nearest audio frame (a few milliseconds of margin). For music and speech it is imperceptible.
Can I cut several parts?
Each pass cuts one fragment. Repeat with the result, or use Merge audio to assemble several parts.