Free Audio Trimmer
Cut any part of an audio file, add a fade in or out, and save it as MP3 or WAV. Your audio is processed in your browser and never uploaded.
Your audio is processed in your browser and never uploaded to a server.
Your trimmed audio
Choose an audio file, pick the part to keep on the waveform, then click Trim and export.
How to Trim an Audio File
Three steps, all in your browser.
Choose an audio file
Pick an MP3, WAV, M4A or OGG file from your device, or drag it onto the upload box. Nothing is uploaded to a server.
Drag the handles to pick the part
Drag the start and end handles on the waveform, or type the times. Add a fade in or out if you like, then preview the selection to check it.
Export and download
Choose MP3 or WAV and click Trim and export. Play the result to check it, then download.
Why Use the SonusVid Audio Trimmer
Your File Never Leaves Your Device
Trimming runs entirely in your browser. Your audio is never uploaded to any server.
Free and Unlimited
No sign-in and no credits. Trim as many files as you like.
Trim Precisely on the Waveform
Drag the handles or type the times, down to 0.1 seconds, and nudge them with the arrow keys. The shortest selection is 0.5 seconds.
Fade In and Out
Add a fade in and a fade out of up to 5 seconds each, so the cut points don't click or jump.
MP3 or WAV, Your Choice
MP3 at 128, 192 or 320 kbps, or uncompressed 16-bit WAV. Up to 50MB and 12 minutes per file.
One Click to a Music Video
Take the trimmed clip straight into the music video generator without choosing the file again.
Trimming Audio: Cuts, Fades and Quality
How to cut audio without a click
Sound is a wave that swings above and below a centre line. If you cut it while the wave is high, the signal jumps from that level to silence in an instant, and the speaker answers with a click or a pop.
There are two ways to avoid it: cut where the waveform is quiet, or add a very short fade so the level eases down to zero. On the waveform you can see the quiet moments between words, beats and phrases, and those are the best places for a start or end handle.
The preview plays the selection with its fades, so you can hear a cut before you export it. What you hear is what the exported file contains.
What fade in and fade out do
A fade in raises the volume from silence to full over the first moments of the clip. A fade out lowers it to silence over the last. Both are straight ramps here: the volume rises or falls at a steady rate.
A fade of half a second is enough to remove a click and still sounds natural. One to two seconds suits a clip or a highlight, and longer fades suit the start or end of a whole song. The tool offers fades from 0 to 5 seconds in half-second steps.
The waveform draws the fade into the picture, so you can see how much of the clip it covers. If the selection is very short, the fades are shortened so that they never overlap.
Does trimming lower the quality?
Cutting itself loses nothing. The tool decodes the audio, keeps the part you selected, and writes it out again. A WAV adds no further loss, and is always written at 44.1 kHz.
An MP3 is lossy, so saving the clip as MP3 compresses it again and a little more detail is lost. At 320 kbps this is hard to hear. For a clip you will keep editing, save a WAV; for one you will just share, an MP3 is fine.
The original file is never changed. Everything happens on a copy in your browser, and nothing is uploaded.
How Long Should a Fade Be?
A suggested fade length for common uses.
| Use | What it does | Suggested fade length |
|---|---|---|
| Remove a click at a cut | Hides the jump at the start or end | 0.5 s |
| A short sound or sample | Smooth edges that loop without a pop | 0.5–1 s |
| A clip or highlight | A gentle start and end | 1–2 s |
| A song's intro or outro | A natural-sounding open or close | 2–3 s |
| A long outro | A slow fade to silence | 4–5 s |
- These are suggestions. The tool's fades are straight ramps in half-second steps, up to 5 seconds.
- On a very short selection the fade in and fade out are shortened so they never overlap.
Audio Trimmer FAQ
Didn't find your answer?Contact us
Clip ready?
Give it a video.
Upload the trimmed clip and AI builds a full music video around its rhythm and mood.