Which audio formats can I trim?

The trimmer accepts any format your browser can decode: MP3, WAV, OGG, FLAC, AAC/M4A, and WebM. Chrome and Firefox support the widest range. Output is always WAV (16-bit PCM) which plays on every device.

How precise is the trimming?

Trimming is sample-accurate. When you set the start and end time in seconds, the tool cuts at the exact sample boundary. For a file at 44 100 Hz, that is precision to within 0.02 ms.

Is my audio uploaded to a server?

No. The file is decoded entirely in your browser using the Web Audio API. No bytes are transmitted to any server. Your audio stays on your device at all times.

Can I trim an MP3 and keep it as MP3?

The browser cannot encode MP3 natively. The trimmer outputs WAV, which is lossless and universally compatible. If you need MP3 output, convert the WAV with an app like Audacity or FFmpeg after downloading.

What if I want to remove silence at the start of a recording?

Drag the Start slider to the right until the waveform shows the audio beginning, or type the exact start time in the input field. The waveform highlights the selected region in blue to show exactly what will be kept.

Can I trim multiple files in one session?

Load a new file at any time — it replaces the current one. Each trim produces an independent download. For batch trimming many files, you would need to repeat the process per file.

What does the waveform show?

The waveform displays the amplitude (volume) of the audio over time. Tall peaks represent loud sections; flat regions near the centre line are silence or very quiet audio. The highlighted blue region shows the portion that will be kept after trimming.

Why is the output larger than the input?

The input may be a compressed format like MP3 (which encodes audio efficiently). The WAV output is uncompressed PCM, which is always larger than the equivalent compressed file. This is normal and the quality is higher.

Audio Trimmer

Cut MP3, WAV, OGG, and FLAC files to exact start and end points with a visual waveform. Sample-accurate, 100% in your browser.

100% in your browser. Your file never leaves your device.

Audio file

Load an audio file to begin.

How to trim audio

Click Choose File and select your audio file (MP3, WAV, OGG, FLAC, or M4A).
The waveform loads. The blue shaded area shows the region that will be kept.
Drag the Start slider to set where the kept audio begins.
Drag the End slider to set where it ends.
Click Preview selection to hear the region, or Trim & Download WAV to save the result.

Common use cases

Remove silence: Cut dead air at the beginning or end of a recording.
Extract a clip: Pull a specific section from a longer recording or track.
Create ringtones: Cut the chorus of a song to the right length for a ringtone.
Podcast editing: Remove a blunder or off-topic section from a voice recording.
Sample preparation: Cut a drum hit or vocal chop from a full recording for music production.

Related tools: Audio Fade · Audio Merger · Volume Normalizer · Audio Converter

よくある質問

Which audio formats can I trim?: The trimmer accepts any format your browser can decode: MP3, WAV, OGG, FLAC, AAC/M4A, and WebM. Chrome and Firefox support the widest range. Output is always WAV (16-bit PCM) which plays on every device.
How precise is the trimming?: Trimming is sample-accurate. When you set the start and end time in seconds, the tool cuts at the exact sample boundary. For a file at 44 100 Hz, that is precision to within 0.02 ms.
Is my audio uploaded to a server?: No. The file is decoded entirely in your browser using the Web Audio API. No bytes are transmitted to any server. Your audio stays on your device at all times.
Can I trim an MP3 and keep it as MP3?: The browser cannot encode MP3 natively. The trimmer outputs WAV, which is lossless and universally compatible. If you need MP3 output, convert the WAV with an app like Audacity or FFmpeg after downloading.
What if I want to remove silence at the start of a recording?: Drag the Start slider to the right until the waveform shows the audio beginning, or type the exact start time in the input field. The waveform highlights the selected region in blue to show exactly what will be kept.
Can I trim multiple files in one session?: Load a new file at any time — it replaces the current one. Each trim produces an independent download. For batch trimming many files, you would need to repeat the process per file.
What does the waveform show?: The waveform displays the amplitude (volume) of the audio over time. Tall peaks represent loud sections; flat regions near the centre line are silence or very quiet audio. The highlighted blue region shows the portion that will be kept after trimming.
Why is the output larger than the input?: The input may be a compressed format like MP3 (which encodes audio efficiently). The WAV output is uncompressed PCM, which is always larger than the equivalent compressed file. This is normal and the quality is higher.

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