How to cut an MP3 file online
- Drop an MP3, WAV, M4A, OGG or FLAC file into the box, or click to pick one from your device.
- Drag across the waveform to select the part you want, then drag the edges or type exact start and end times in seconds.
- Choose Keep selection to save just that part, or Remove selection (cut out) to delete it and join the rest.
- Press Play selection or Preview result (Space also plays), and set a fade in or fade out if you need one.
- Pick MP3 with a bitrate, or WAV, then click Export clip to download the trimmed audio.
What you can do with Audio Cutter
- Visual waveform editor
- Select by dragging on the waveform and adjust either edge with the mouse or a finger, with 0.01-second number inputs for precise cuts.
- Cut out the middle
- Remove mode deletes the selected section and joins the remaining audio with a short 12 ms crossfade so the edit doesn't click.
- Fade in and fade out
- Add linear fades of up to 30 seconds at the start or end of the clip, useful for ringtones, intros and outros.
- MP3 or lossless WAV
- Export MP3 at 96 to 320 kbps or 16-bit WAV. The file keeps the original name with -cut added.
- Preview before saving
- Hear the exact result, including fades and removed sections, before you encode and download anything.
- Private by design
- The file is decoded and cut by your browser and never uploaded, so long recordings and personal audio stay on your device.
MP3 cutting quality, file sizes and ringtone tips
Your browser decodes the file to uncompressed audio, the cut is made to the exact sample, and the clip is then encoded again. Because MP3 is a lossy format, re-encoding adds a small generation loss; choosing a bitrate equal to or higher than the source (192 or 320 kbps for most music) keeps it inaudible. If you plan to edit the clip again later, export WAV instead. It's lossless, but at about 10 MB per stereo minute it is roughly ten times larger than a 128 kbps MP3.
To make a ringtone, select 20 to 30 seconds, add a fade in and fade out of 1 to 2 seconds, and export MP3. Android phones accept MP3 ringtones directly: copy the file to the Ringtones folder or choose it in your sound settings. iPhones need the M4R format, which this tool doesn't produce, so you'd convert the MP3 in an app such as GarageBand. For podcasts and voice notes, Remove mode is handy for deleting a cough or a long pause from the middle of a recording without splitting it into separate files.
Frequently asked questions
Is it safe to cut private recordings with this MP3 cutter?
Yes. The audio is decoded and trimmed locally with the Web Audio API, and the MP3 is encoded in your browser with the open-source LAME encoder (lamejs). The file is never uploaded, so interviews, voice memos and unreleased tracks stay on your device.
Can I cut WAV, M4A or FLAC files too?
Yes. Despite the name, the cutter opens any format your browser can decode, including WAV, M4A/AAC, FLAC, OGG, Opus and WebM, and often the audio track of an MP4 video. The trimmed clip is saved as MP3 or WAV.
Is there a file size or length limit?
There's no fixed limit. The whole file is decoded into memory as uncompressed audio, which takes about 20 MB of RAM per minute of stereo sound. Hour-long files work on most computers, but they may be slow or fail on phones with little memory.
How do I remove a section from the middle of a song?
Select the part you want to delete, switch Mode to Remove selection (cut out), and press Preview result to check the joint. Export saves the audio before and after the selection joined together, with a 12 ms crossfade to prevent a click at the cut point.
Does the MP3 cutter work on iPhone and Android?
Yes. The waveform supports touch, so you can drag to select and move the edges with a finger in Safari or Chrome on mobile. Exported files go to your browser's downloads; on iPhone they appear in the Files app.