How do I convert stereo to mono?

Drop your file onto the tool above, pick Mono, and click Convert. All channels are averaged into a single track, then you can play or download the mono WAV — no account needed.

Does my file get uploaded?

No. The conversion runs entirely in your browser — your audio never leaves your device.

What happens if the file is already mono or stereo?

If the source already matches your target layout, the tool passes it through unchanged and tells you so — you still get a clean 16-bit PCM WAV to download.

Free tool

Mono or stereo, your call.

Runs entirely in your browser. Drop a clip to downmix stereo into mono or duplicate a mono track into full stereo — ideal for podcasts, voiceovers, and fixing dual-channel exports. Nothing is uploaded.

Try it

Drop an audio file

The fastest way to switch channel layout without installing anything.

Drop an audio file here

MP3, WAV, OGG, M4A — up to 25 MB. We'll switch its channel layout.

How it works

Your audio never leaves your device

The converter decodes the file in your browser, averages channels down to mono or duplicates a mono track across left and right, then re-encodes a 16-bit PCM WAV — all on your machine, no server round trip.

Step 1

Drop the file

MP3, WAV, OGG, M4A or FLAC — up to 25 MB.

Step 2

Pick the layout

Downmix to mono, or expand a mono track to stereo.

Step 3

Download the WAV

Preview first, then save the converted audio.

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Related free tools

Keep going — every one of these runs free in your browser, no signup.

Audio Format ConverterConvert between MP3, WAV, OGG, M4A and FLAC — right in your browser.Video to Audio ExtractorPull the audio track out of an MP4, MOV or WEBM as MP3 or WAV.Audio to WAVConvert MP3, OGG, M4A or FLAC to 16-bit PCM WAV.Audio CompressorShrink an audio file's size by re-encoding at a lower bitrate.

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Want the full studio?

Open the AudioPod dashboard for stem separation, voice cloning, transcription, multilingual narration, and batch processing — all on one free account.

Open the dashboard