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Audio Trimmer

Cut a section out of an audio file by setting a start and end time, right in your browser.

Audio
Drop an audio file here or click to browse
or paste from clipboard (Ctrl+V) · MP3, WAV, M4A, OGG
Files stay in your browser. Nothing is uploaded.
Trim range

Use mm:ss or seconds, for example 0:05 or 12.

How to trim an audio file online

  1. Add your audio

    Drop an MP3, WAV, M4A, or OGG file onto the tool. A preview player appears and the end field fills in with the full length automatically.

  2. Set the range

    Type the start and end as mm:ss, h:mm:ss, or plain seconds, for example 0:05 or 12, to mark the section you want to keep.

  3. Trim

    Click Trim audio. The tool cuts the section without re-encoding when the file allows it, and re-encodes cleanly when the container requires it.

  4. Download

    Listen to the trimmed clip, check the new length and file size on the result card, then click Download to save it.

Why use this tool

Lossless cutting when possible

The tool copies the audio data directly into the new file whenever the format allows it, so the cut is near instant and the sound is untouched.

Automatic re-encode fallback

When a direct copy would produce a broken clip, the tool re-encodes the section at high quality instead, so the result always plays correctly.

Three time formats

Start and end accept mm:ss, h:mm:ss, or plain seconds with decimals, and the end field pre-fills with the full length of the file.

Built-in preview player

Listen to the source before cutting and to the trimmed clip after, so you can check the cut before downloading anything.

Bounded to your audio

Times are clamped to the actual duration and validated before the trim runs, so an out-of-range value cannot produce a broken cut.

Cut on your device

The trim runs inside the browser, so private recordings are never uploaded anywhere.

About this tool

This trimmer cuts an audio file down to the section between a start and an end time, entered as mm:ss, h:mm:ss, or plain seconds. Drop in an MP3, WAV, M4A, or OGG file, listen to it in the built-in player, set the range, and click Trim audio. The tool tries the cheapest route first: copying the audio data directly into a new file with no re-encoding, which is near instant and leaves the sound untouched. When the container requires it, the processing engine re-encodes the section at a high-quality setting instead, trading a little speed for a cut that always plays correctly.

The classic jobs are small ones: cutting the dead air off the front of a voice memo, pulling one usable quote out of an hour-long interview or lecture recording, or shortening a song into a ringtone. Because the time fields accept plain seconds with decimals, you can place a cut precisely instead of dragging a slider and hoping. The end field pre-fills with the full length, so trimming just the start takes a single edit.

Everything runs on your device, which matters when the recording is a private meeting, a rough demo, or a voice note you would rather keep to yourself. Nothing is uploaded, so nothing can leak. The trimmed clip drops straight into the rest of the catalog: change its format with the audio converter, stitch takes together with the audio joiner, or capture a fresh take with the voice recorder first and trim it here.

Frequently asked questions

How do I trim an audio file?
Drop an audio file onto the tool or click to browse. A preview player appears so you can find the right spots, and the end field fills in with the full length automatically. Set the start and end of the section you want to keep, click Trim audio, then listen to the result and click Download to save it.
What time format should I use for the start and end?
You can type times as mm:ss (for example 1:30 for one minute thirty seconds), as h:mm:ss for longer recordings, or as plain seconds with decimals (for example 90 or 12.5). Values are clamped to the length of your file, so an out-of-range time cannot break the cut.
Will trimming reduce the quality of my audio?
Usually not at all. When the format allows it, the tool copies the audio data directly without re-encoding, so the trimmed clip sounds identical to the original. When a direct copy is not possible, it re-encodes the section at a high-quality setting instead. That step is honest lossy-to-lossy work, but at these settings the difference is rarely audible.
Which audio formats are supported?
You can drop in MP3, WAV, M4A, and OGG files, and most other common audio files work too. The trimmed clip keeps the same format as the source whenever possible, so an MP3 in means an MP3 out. Less common formats are saved as MP3. To end up in a different format, trim first and then run the clip through the audio converter.
Is my audio uploaded to a server?
No. The entire trim runs locally in your browser. Your recording never leaves your device, is never uploaded, and is not stored or logged anywhere. The first time you trim, the tool downloads the audio engine once; after that it stays ready for the rest of your session.
Is there a limit on file size or length?
There is no fixed limit, but everything runs in your browser using your device memory, so very long recordings use more RAM. A direct-copy trim is near instant even on hour-long files; a section that needs re-encoding takes longer the longer it is.

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