Is my audio uploaded to a server?

No. The entire process happens in your browser using the Web Audio API. Your file is decoded locally and never sent anywhere.

What file formats can I load?

Any audio format your browser can decode — typically MP3, WAV, OGG, FLAC, AAC, and M4A. The exact formats depend on your browser.

What format is the downloaded file?

The download is always a 16-bit PCM WAV file, which is universally compatible. The channel count matches the original; the sample rate is the one your browser decodes at, usually 44.1 or 48 kHz.

Is there a file size limit?

There is no enforced limit, but very large files (several hundred MB) may be slow to decode depending on your device. Files up to about 50 MB decode quickly in most modern browsers.

Can I trim to millisecond precision?

Yes. You can type exact start and end times in the time inputs (format m:ss.mmm, for example 1:05.250). The drag handles provide coarser control; the inputs provide fine-grained precision.

How do I trim an MP3 and keep it as an MP3?

Trim it here and download the WAV, then convert that file with WAV to MP3. At 128 kbps a 30-second MP3 is about 0.5 MB, against 5 to 6 MB for the WAV.

Does trimming lower the audio quality?

No. The decoded audio is written straight to 16-bit WAV with no new compression, so the clip sounds the same as the decoded original. Converting it back to MP3 adds one more lossy step, so use a bit rate at least as high as the source.

Audio Trimmer

Load an MP3, WAV, or OGG file, set start and end points on the waveform, preview the trimmed clip, and download it as a WAV — all in your browser.

Open an MP3, WAV, OGG or other audio file, set the start and end on the waveform or type exact times (m:ss.mmm), press Preview Trim, then Download WAV.

Audio File

Drop an audio file here

MP3, WAV, OGG, FLAC, AAC — up to ~200 MB

Quick answer

Open an MP3, WAV, OGG or other audio file, set the start and end on the waveform or type exact times (m:ss.mmm), press Preview Trim, then Download WAV. The clip is saved as uncompressed 16-bit WAV, which is much larger than MP3; run it through WAV to MP3 if you need a small file.

Examples

Clip length	WAV size (stereo, 44.1 kHz)	WAV size (stereo, 48 kHz)
10 seconds	1.8 MB	1.9 MB
30 seconds	5.3 MB	5.8 MB
1 minute	10.6 MB	11.5 MB
3 minutes	31.8 MB	34.6 MB

Open an audio file.

Summary

Audio Trimmer decodes your audio file entirely in the browser using the Web Audio API, draws the full waveform on a canvas, and lets you drag start and end handles to choose exactly which section to keep. Hit Preview to hear only the trimmed region, then Download to export it as a standard WAV file. No upload, no server, no account — your audio never leaves your device.

How it works

Click "Choose Audio File" and select an MP3, WAV, OGG, or other browser-supported audio file.
The tool decodes the file and draws the full waveform on the canvas.
Drag the green start handle or red end handle to set the trim boundaries.
Alternatively, enter exact start and end times in the time inputs.
Click Preview to play back only the trimmed region.
Click Download WAV to export the trimmed clip as a WAV file.

Use cases

Cut a specific section out of a long podcast recording.
Extract a short clip from a song for use as a ringtone or sample.
Trim silence from the beginning or end of a recorded audio file.
Create short audio snippets for social media or presentations.
Remove unwanted sections from an interview or voice memo.
Quickly crop an audio file without installing any software.

Frequently Asked Questions

Last updated: 2026-06-11 · Reviewed by Nham Vu