Audio Trimmer
Audio Trimmer is a free online audio converter for changing MP3, WAV, OGG, FLAC, M4A, and AAC files into MP3 files. Audio Trimmer accepts 10 MIME types, returns audio/mpeg, includes 3 settings, and runs in your browser on the device.
Drop .mp3 / .wav / .ogg / .flac / .m4a / .aac file here
or click to choose
Options
Key facts
- Input
- 6 formats: MP3, WAV, OGG, FLAC, M4A, and AAC (audio/mpeg, audio/mp3, audio/wav, audio/x-wav, audio/ogg, audio/flac, audio/x-flac, audio/mp4, audio/x-m4a, audio/aac)
- Output
- MP3 (audio/mpeg)
- Runtime
- your browser on the device
- Settings
- 3 controls: Start time, End time, and Output format
- File mode
- 1 input file creates 1 output file
- Cost
- $0, no account required
How to use Audio Trimmer
- 1
Open your MP3, WAV, OGG, FLAC, M4A, AAC file
Drop your MP3, WAV, OGG, FLAC, M4A, AAC file onto the page, or click to browse and pick one from your device.
- 2
Choose options
Adjust the conversion options to suit your needs. Defaults work well for most inputs.
- 3
Convert and download
Click Convert. Your MP3 file is ready to download in seconds.
Audio Trimmer details
First, Audio Trimmer reads MP3, WAV, OGG, FLAC, M4A, and AAC source files and prepares MP3 output for the audio workflow. Next, The visible controls are Start time, End time, and Output format. Additionally, Files and text stay in the browser session.
Crop the part of an audio file you actually want. Enter a start and end time; either in seconds ("30"), MM:SS ("1:15"), or HH:MM:SS ("0:01:15"); and download just that slice. Leave the end blank to cut from the start through the end of the file, or use "+30" to mean "30 seconds from the start". By default we copy the audio stream losslessly with no re-encoding, which is instant but cuts on container boundaries; if you need sample-accurate cuts, pick MP3 or WAV in the format dropdown to force a re-encode. Audio Trimmer runs in your browser via ffmpeg.wasm; the file never leaves your device.
Common searches
- audio trimmer
- mp3 cutter
- mp3 trimmer
- trim audio
- cut mp3
- audio editor
Related tools
Tools that work with the same formats — most users open one of these next.
MP3 to M4A
Convert MP3 audio to M4A (AAC in MP4 container) — free online, no upload.
MP3 to WAV
Convert MP3 audio to uncompressed WAV — free online, no upload.
MP3 to OGG
Convert MP3 audio to Ogg Vorbis — free online, no upload.
MP3 to FLAC
Convert MP3 audio to FLAC (lossless) — free online, no upload.
MP3 to AAC
Convert MP3 audio to AAC with selectable bitrate — free online, no upload.
AAC to MP3
Convert AAC or M4A audio to MP3 — free online, no upload.
Frequently asked
What is Audio Trimmer?
Audio Trimmer is a free online audio converter for changing MP3, WAV, OGG, FLAC, M4A, and AAC files into MP3 files. Audio Trimmer accepts 10 MIME types, returns audio/mpeg, includes 3 settings, and runs in your browser on the device.
What files does Audio Trimmer accept and create?
Audio Trimmer accepts MP3, WAV, OGG, FLAC, M4A, AAC files (audio/mpeg, audio/mp3, audio/wav, audio/x-wav, audio/ogg, audio/flac, audio/x-flac, audio/mp4, audio/x-m4a, audio/aac) and creates MP3 files (audio/mpeg). The page includes 3 settings: Start time, End time, and Output format.
Do my files and data stay private?
Yes. Audio Trimmer runs entirely in your browser using your device's CPU. Files and text are never uploaded to our servers, so your data stays private.
How do I use Audio Trimmer?
Open Audio Trimmer, drop in your MP3, WAV, OGG, FLAC, M4A, AAC file, choose any options, and click Convert. Your browser does the work locally and produces a MP3 file you can save right away.
What is the maximum file size for Audio Trimmer?
Because Audio Trimmer runs in your browser, the maximum size depends on your device's available memory. Most modern phones and laptops handle files up to a few hundred MB without issues.