Add a track
Drop an audio file or pick one from your phone or computer. The waveform appears as soon as the file is read.
Cut your track.
Keep the best part.
Drag two handles on the waveform, listen to the selection and export it as MP3 or WAV. Big files open fast, and nothing leaves your device.
Open the trimmer
Your audio stays on your device
Sonic Trim
Local processing
Trim your audio
Drop an audio file here, or tap to choose
MP3, WAV, FLAC, AAC, OGG, M4A
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Your clip is ready
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Getting started
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Trim audio in three steps
Set the cut
Drag the two handles, tap the waveform to move the nearest one, or type exact times. Press play to hear only the selection.
Export
Choose MP3 or WAV, add a short fade if you like, and download the clip.
Large files
Built for long recordings and slower devices
Sonic Trim reads big WAV files in small pieces, so a long recording opens quickly and uses very little memory. Cutting a WAV to WAV without a fade is instant and lossless, and keeps the original bit depth. Compressed files such as MP3 or M4A have to be decoded in full before they can be edited, so very large ones may not open on a phone.
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Loads only what it needs
The editor is fetched when you pick a file, and the MP3 encoder is fetched only if you export to MP3.
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Lossless WAV cuts
Exporting a WAV clip from a WAV file copies the selected audio exactly as it is.
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Clear limits
If a compressed file is too large for your device, Sonic says so and suggests using WAV instead of failing silently.
Local processing
Your audio stays in the browser
No upload to trim
The file you select is read and cut on your device. The clip is created locally and handed to you as a download.
Good for private recordings
Meetings, interviews, lectures and voice notes can be trimmed without sending them to a third-party service.
FAQ
Frequently asked questions about Sonic Trim
Which formats can I trim?
Any audio format your browser can decode, including MP3, WAV, FLAC, AAC, OGG and M4A. You can export the clip as MP3 or WAV.
Does trimming reduce quality?
Cutting a WAV file to WAV does not change the audio at all. Exporting to MP3 re-encodes the clip, so choose a higher bitrate if quality matters.
Why did my MP3 not open on my phone?
Compressed files must be fully decoded, which takes a lot of memory. Very large MP3, FLAC or M4A files can exceed what a phone allows. Convert the file to WAV first, or use a computer.
Is my audio uploaded?
No. Trimming happens in your browser and the result is created on your device.
Is Sonic Trim free?
Yes, and no account is needed.