What audio formats can I trim, split or join?

Anything your browser can decode: MP3, WAV, M4A/AAC, OGG and FLAC in most browsers. The download is always a 16-bit WAV file.

How do I split one audio file into parts?

Open the Split tab, load your file, then press “Add cut at playhead” (or the C key) at each split point. Each segment can be previewed and downloaded individually, or download them all at once.

Can I join files with different sample rates?

Yes. Every file is decoded to 44100 Hz on load, and mono files are upmixed when joined with stereo ones, so the merged WAV is consistent.

Is there a limit on file length?

No hard limit. The whole file is decoded into memory, so very long recordings (an hour or more) need a desktop browser with free RAM. Podcasts and typical clips work everywhere.

Can I convert audio formats?

Yes. The Convert tab turns any supported input (MP3, WAV, M4A, OGG, FLAC) into MP3 (128, 192 or 320 kbps) or 16-bit WAV, entirely in your browser.

Trim Audio Online — Cut, Split, Join & Convert Free

Cut the silence off your podcast intro, split a long recording into chapters, join clips into one file, or convert between MP3 and WAV. Drag on the waveform, preview the result, download — 100% in your browser, your audio never leaves your device.

🎤️ Drop an audio file hereor click to choose — MP3, WAV, M4A, OGG, FLAC. Pasting works too.

How to trim an audio file

Drop your audio — MP3, WAV, M4A, OGG or FLAC. It is decoded locally; nothing is uploaded.
Drag across the waveform to select the part you want, or type exact start/end times. Drag the selection to move it, drag its edges to fine-tune it.
Keep or Delete, then preview and download — keep exports only the selection; delete exports everything except it. Preview plays the result before you download a 16-bit WAV.

How to split audio into parts

Open the Split tab and load your file.
Move the playhead where you want a cut and press “Add cut at playhead” (or just press the C key). Drag cut lines to nudge them; click a line’s × to remove it.
Each segment appears in the list with its own preview and download buttons, or download them all at once.

How to join audio files

Open the Join tab and drop two or more files.
Reorder with the arrow buttons — the merged file follows your list order top to bottom.
Press “Merge & preview” to hear the result, then download one merged 16-bit WAV. Files with different sample rates or mono/stereo are normalized automatically.

When to use it

Podcasters — trim dead air and false starts, split episodes into chapters.
Musicians — cut samples, join takes, split a long jam into tracks.
Voice notes & interviews — keep only the good parts, join segments recorded separately.
Video creators — prepare clean audio segments before editing.

Frequently asked questions

Is my audio uploaded to a server?

No. Everything — decoding, the waveform, trimming, merging, the WAV export — happens in your browser with the Web Audio API.

What do I get when I download?

A 16-bit WAV file: yourfile-trimmed.wav, yourfile-part1.wav, or joined.wav. WAV is lossless and opens in every editor; encode to MP3/AAC once, from this file, if you need a smaller delivery format.

How precise are the cuts?

Sample-accurate internally. Zoom in with the + button, mouse wheel, or double-click to reset, and drag cut lines to nudge them to the exact sample.

Can I join a mono file with a stereo file?

Yes. Everything is decoded to 44100 Hz, and mono files are upmixed when the merge includes stereo, so the output is consistent.

Is there a file size limit?

Only your device’s memory, since everything runs locally. Hour-long files work on desktop; very long files on low-RAM phones may struggle.

Need to censor words instead? Try the audio bleep tool. Mastering music? Measure your loudness with the free LUFS analyzer.