Trim audio to WAV

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About this tool

Trim audio to WAV without uploading

Choose an audio file your browser can decode, then select a start and end point. You can adjust gain, normalize the peak, mix down to mono and alter playback speed.

Before you start

WAV is uncompressed and may be much larger than MP3 or AAC. Changing playback speed here also changes pitch.

Are files uploaded to a server?

No. The input file bytes are processed inside your browser. Some tools download their JavaScript libraries from public CDNs, but the files themselves are not uploaded.

Do I need an account or a paid plan?

No. The current version is free, has no registration and runs on devices with a compatible modern browser.

Can I export an MP3 after trimming?

This version exports uncompressed WAV. Your browser must be able to decode the source audio; changing playback speed also changes pitch.

A clean trim is about timing as well as format

Trimming is useful for removing silence, isolating a quote, preparing a sound effect or creating a shorter review copy. Listen just before and after the cut point so you do not remove consonants, room tone, reverb tails or musical attacks that make the edit sound abrupt.

This tool exports WAV, an uncompressed format that is convenient for editing and broad compatibility but can be much larger than MP3 or AAC. If the trimmed audio is only for messaging or streaming, you may later choose a compressed delivery format in another application. Keep the longer source until the edit is approved.

Practical checks

Leave a small amount of natural room tone when dialogue would otherwise sound chopped.
Preview the first and last second of the selection before export.
Expect WAV files to be larger than common compressed audio formats.

Practical walkthrough · audio trim

Keep a 20-second recording excerpt

Example task: A one-minute voice memo contains a useful answer between roughly 00:15 and 00:35.

Try this workflow

Open a browser-decodable audio file and find the actual in/out points by listening.
Set the trim range and export to WAV.
Listen to the beginning and end of the output to check that no words were cut.

What to expect

A 20-second excerpt is easier to review, but WAV can be larger than a compressed recording.

When to take extra care

The output is not a noise-removal or mastering pass. Browser codec support and in/out accuracy depend on decoding behavior.