Audio Trimmer
Runs in your browser — your files are never uploaded.
Cut any audio file down to just the part you want — set a start and end time and OkConverter exports the trimmed clip as MP3. Works with MP3, WAV, M4A, FLAC, OGG and AAC input. Runs entirely in your browser using a real copy of ffmpeg compiled to WebAssembly.
How to use Audio Trimmer
- 1
Drop your audio file onto the box, or click to choose one.
- 2
Enter a start and end time — seconds (like "90") or mm:ss / hh:mm:ss.
- 3
Click “Trim & Download” to save the trimmed MP3.
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Frequently asked questions
What time formats can I enter?+
Plain seconds ("90"), minutes:seconds ("1:30"), or hours:minutes:seconds ("1:02:03") — with optional fractional seconds like "1:30.5".
What audio formats can I trim?+
MP3, WAV, M4A, FLAC, OGG and AAC all work as input — the trimmed output is always exported as MP3.
Is my file uploaded anywhere?+
No. Once the engine has loaded, trimming happens entirely inside your browser tab — the audio is never uploaded.