Trim Audio Online
Trim your audio precisely using a waveform editor and export instantly.
Tool Information
Runs in browser:Yes
Upload required:No - processed locally in your browser
Third-party processing:None
File retention:Files stay on your device and are not stored by Convertios.
Max file size:100 MB
Supported formats:MP3, WAV and browser-supported audio → Trimmed audio file where supported
Tidy up recordings in a minute
Most recordings start with a few seconds of fumbling and end with the sound of someone reaching for the stop button. Trimming removes that dead air from voice memos, interviews, lectures, podcast takes and meeting recordings, so the file starts with the first word and stops after the last one.
Works with the formats your recorder makes
You can open any audio file your browser can play — typically WAV, M4A from iPhone voice memos, OGG, AAC and MP3. Whatever the input, the trimmed result is saved as an MP3, so this page also turns large WAV recordings into compact files that are easy to email or upload.
Finding the silence
- On the waveform, speech shows as dense blocks and silence as a flat line. The edges of those flat sections are where you want to cut.
- Zoom in to place the start just before the first syllable.
- Leave a small cushion of about a quarter to half a second at each end. Cutting exactly on the first sound can clip consonants and makes the recording feel abrupt.
- Play the selection once before exporting to check that nothing important is missing.
Longer recordings
The whole recording is decoded in your device’s memory. Files of an hour or more work on computers but can be slow on older phones; if that happens, use a computer or trim shorter parts. Files up to 100 MB are supported.
Trimming keeps one continuous section. To remove something from the middle, export the first part and the second part separately.
Cutting a clip from a song instead? The MP3 Cutter page has tips for ringtones and music. To pull the sound out of a video first, use Video to MP3.
Questions about trimming audio
Will the voice quality change?
The trimmed part is saved as a 192 kbps MP3, which is more than enough for speech. Stereo recordings stay stereo.
Are recordings uploaded?
No. Interviews and private notes stay on your device; the trimming happens in your browser.