Audio Trimmer

WAV is uncompressed, so the cut adds no further loss. If you need a smaller file, compress the WAV afterwards.

Yes. WAV stores the audio uncompressed, roughly ten times the size of an MP3.

Whatever your browser can decode, which covers MP3, M4A, AAC, WAV and OGG on current browsers.

No. This is an audio trimmer in your browser: decoding and cutting both happen on your own machine.

To the sample. The times you type are converted to exact sample positions.

Yes. The audio trimmer runs in your browser, so there is no account, no watermark and no length limit set by us. You choose the start and end in seconds, press Start, and the trimmed part is saved as a WAV. Nothing is uploaded, so there is no server time to pay for and nothing to delete afterwards.

Choose the MP3, type the start and end in seconds, and press Start. Your browser decodes the file and copies out the samples between those two points, then hands you a WAV. None of this goes over the network. The file is read from your disk and the result is written by the page itself, so there is nothing on a server to delete afterwards.

No. Both boxes take seconds, so 1:30 is 90 and 2:05 is 125. You can use tenths of a second, for example 12.5, when a cut has to land between two words. Leave the end at 0 and the clip runs to the end of the file. If you type an end time past the end of the track, the cut simply stops at the last sample.

Not in one go. The audio cutter keeps one stretch, the part between your start and end, and drops everything outside it. If you want the beginning and the end without the middle, this tool will give you each of those as its own WAV, but it has no way to join them back together.

For a WAV, yes. The page reads the rate from the file header and decodes at that rate, so a 44.1 kHz file stays 44.1 kHz. For MP3, M4A and other compressed audio it cannot see the original rate before decoding, so the browser decodes at its default rate, often 48 kHz. Stereo stays stereo either way, and the WAV is written as 16-bit.

Yes. Add them all and the same start and end times are applied to each one. Every file gets its own row with its own status, and the results come back as one zip, each named after the original with -cut.wav on the end. If a file is shorter than your start time, that row says the range does not work and the rest still go through.

The audio cutter decodes the whole file first, from start to finish, and only then copies out the part you asked for. Turning a two-hour MP3 into raw audio takes your browser a moment and a fair amount of memory, even if you only want ten seconds of it. Wait for the row to say Done before you decide it has stuck.