Audio Cutter Online Free — Trim MP3, WAV with Waveform Editor
Trim MP3, WAV, OGG with waveform editor — fade in/out, preview, instant download
Trim any audio file directly in your browser. Upload MP3, WAV or OGG, drag the waveform handles to set your start and end points, add fade in/out, preview the result, then download. No upload to server — 100% private and instant.
Drop your audio file here or click to browse
MP3, WAV, OGG, WEBM, FLAC — Up to 200MB
How to Cut Audio Online
1. Upload your MP3, WAV or OGG file. 2. Drag the waveform handles or type timestamps to set your start and end points. 3. Optional: add fade in/out effects. 4. Click Cut & Download to process and save your trimmed audio.
How the Audio Cutter Works
The Web Audio API decodes your audio file into raw PCM samples in the browser. An OfflineAudioContext renders only the selected region. The output is encoded as lossless WAV and downloaded directly — no server involved.
Frequently Asked Questions
Is my audio uploaded to a server?
No. All processing uses the Web Audio API in your browser. Your audio files never leave your device.
What audio formats can I trim?
MP3, WAV, OGG, and WEBM files that your browser can decode. Output is downloaded as WAV.
How precise is the trim?
Millisecond precision. Use the timestamp input fields for exact cut points, or drag the waveform handles for visual trimming.
Can I add fade in and fade out?
Yes. Toggle Fade In and Fade Out options and set the duration. Fades are applied during export.
Why is the output WAV instead of MP3?
Browsers cannot encode MP3 natively due to licensing. WAV is lossless and universally compatible. You can convert to MP3 using the Audio Converter tool.