Upload a track, select a waveform range, and export from the original audio data. WAV is aligned to sample blocks; MP3 is aligned to audio frames with no recompression.
Precision Workspace
Choose an audio file, adjust the waveform, preview your selection, and save the clip.
The browser reads the local file for preview so rhythm, silence, and peaks are easy to spot.
Select quickly on the waveform, then fine-tune start and end times for samples, ringtones, or edits.
MP3 clips align to frames and WAV clips align to sample blocks to preserve the original data as much as possible.
Format Converter
The local converter is being prepared. A later release will support MP3, WAV, FLAC, OGG, and AAC/M4A conversion for unencrypted audio. This version focuses on lossless cutting first.
Popular Tasks
Jump straight into the workflow you need. The page opens the right tool and prepares the matching output format.
Audio Cutting Guide
Sonic Cutter is a free online audio cutter for trimming music, making ringtones, organizing samples, and exporting podcast clips. It preserves original audio data whenever possible: MP3 is cut on frame boundaries, WAV is cut on sample blocks, and exports are not re-encoded.
Drop music, recordings, podcasts, or sample files into the page. The browser reads them locally and draws the waveform without waiting for an upload.
Drag the waveform handles, or enter precise start and end times. Preview the selection first, then fine-tune it.
Save the clip locally. MP3 exports align to frame boundaries and WAV exports align to sample blocks to avoid recompression changes.
After uploading an MP3, choose start and end points on the waveform. Export snaps to nearby MP3 frame boundaries to reduce quality loss from re-encoding.
WAV files are sliced on sample blocks while preserving sample rate, bit depth, and channels for production and precise audio work.
Audio is read and processed in your browser, not uploaded to a server. Private recordings, unreleased tracks, and work files stay on your device.
Recompression can change detail and add artifacts. This tool slices from the original file data to preserve the encoded data and sound quality as much as possible.
This version focuses on lossless MP3 and WAV export. M4A, AAC, FLAC, OGG, and similar containers require more complex rewriting for true browser-only lossless cuts.
| Item | Sonic Cutter local cutting | Common upload-based tools |
|---|---|---|
| Privacy | Files stay in your browser, ideal for private recordings, unreleased music, and work assets. | Files usually need to be sent to a server, so privacy depends on the platform. |
| Speed | Skip upload queues and export immediately after selecting a clip. | Large files often require upload, processing, and download time. |
| Quality | MP3/WAV export is based on original data and does not intentionally recompress. | Some platforms transcode or recompress files, which can change bitrate and detail. |
| Access | Open the page and use it without installing software, signing up, or creating a project. | Some tools limit file size, exports, or require an account. |
Yes. You can upload audio in the browser, select a clip, and save it locally.
No. Audio is processed in your browser and the page does not upload your music.
To avoid recompression, MP3 aligns to audio frames and WAV aligns to sample blocks, which can create millisecond-level boundary differences.
This version focuses on lossless MP3 and WAV export. M4A, AAC, FLAC, and OGG are not exposed as lossless export formats yet.
No. Cutting without recompression preserves the existing encoded data, but it cannot restore information lost when the MP3 was originally compressed.
