About the Audio Trimmer
Audio Trimmer cuts a part out of an audio file. Choose a song or recording, drag the two handles on the waveform to mark the part you want, or type exact start and end times, and press Play selection to hear it. You can add a fade in and a fade out of up to five seconds, then save the selected part. Your browser decodes the file, and the trimmed part is saved as an uncompressed WAV file, which is much bigger than an MP3, because the page has no MP3 encoder. Your original file is not changed and nothing is uploaded. Which formats you can open depends on your browser, and tags and cover art are not kept.
Updated September 2026
How to use the Audio Trimmer
- 1Select an audio file such as MP3, M4A, OGG, FLAC or WAV.
- 2Drag the handles on the waveform, or type the start and end times.
- 3Add a fade in or fade out if you like, then press Play selection to check it.
- 4Press Save as WAV to download the trimmed part.
Trimming audio step by step
Pick a file and wait a moment while your browser decodes it. The waveform shows the loudness of the sound over time. The highlighted area between the two handles is the part that will be kept. Drag a handle, or tap the waveform near it, to move it. For finer control, type a time such as 1:23.4 or just 83.4 seconds, or use the minus and plus 0.1 buttons to nudge by a tenth of a second.
Press Play selection to hear the result. When it sounds right, press Save as WAV. The file name is your original name with -trimmed added.
Fades and clean cuts
A cut in the middle of a sound can produce a click. A short fade in and fade out of around half a second avoids that and makes a clip sound finished. Choose a start point where the music is quiet or between words, and use the nudge buttons to move it a fraction of a second at a time.
WAV output and file size
- WAV is uncompressed, so it takes roughly 10 MB for a minute of stereo CD-quality audio.
- The original file is not changed, and only the selected part is saved.
- Tags such as artist and cover art are not kept.
- Files that would need more than about 250 MB once decoded are refused.
- To make a smaller file, convert the WAV to MP3 or M4A with another program.
Ringtones and short clips
Short clips are handy for ringtones, alerts, samples and voice notes. Pick the part you want, add a fade out and save it. Your phone may want a specific format for ringtones, so check what it supports.
To record something new, use Voice Recorder. To hear text read aloud, try Text to Speech, and to capture your screen with sound, see Screen Recorder. Timing something? Stopwatch may help.
Features
- Waveform with draggable start and end handles
- Exact times and 0.1 second nudge buttons
- Fade in and fade out up to 5 seconds
- Preview of exactly what will be saved
- Saves as a WAV file named after your original
- Works on your device, with no upload
Frequently asked questions
How do I cut part of an audio file?
Select the file, then drag the two handles on the waveform to mark the part you want to keep. You can also type the start and end times. Press Play selection to listen, and Save as WAV to download that part.
What format is the trimmed file?
It is a WAV file, which is uncompressed 16-bit audio. That is why it is bigger than an MP3 of the same length. The page cannot make MP3 files, so if you need a small file, convert the WAV with another program afterwards.
Can I make a ringtone with this?
You can cut the part of a song you want, usually 20 to 30 seconds, and add a short fade out. Phones often need a particular format, such as M4R or MP3, so you may have to convert the WAV afterwards, depending on your phone.
Does trimming reduce quality?
The tool does not compress the sound again. The saved part has the quality of the decoded audio. If your original was an MP3, its own compression is already in the sound, and the WAV keeps it as it is.
How do I add a fade in or fade out?
Move the Fade in or Fade out slider, from 0 to 5 seconds. A fade in raises the volume gradually from silence at the start of your selection, and a fade out lowers it to silence at the end. The preview includes the fades.
Is my audio uploaded?
No. The file is read and decoded by your browser and stays on your device. Nothing is sent to a server, and your original file is never changed.
Why can't it open my file?
Which formats can be opened depends on your browser. MP3, M4A, OGG, FLAC and WAV usually work. If your browser can't read the file you'll see a message, and you can convert the file with another program first. Very long files are refused because decoded audio takes a lot of memory.