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OneFileConverter
Audio

Convert stereo audio to mono

Sound only in one earbud? A mono mix puts it in both — and suits voice and podcasts.

Formats
MP3, WAV, OGG +4
Max size
2 GB
Price
Free

Drop files here

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MP3, WAV, OGG, FLAC, M4A, MP4, WEBM · up to 2.00 GB per file

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Audio ConverterConvert between MP3, M4A, WAV, OGG and FLAC input.Change VolumeMake audio louder or quieter by a set amount.Normalize AudioMake quiet recordings louder without clipping.

How to convert stereo audio to mono

  1. Add your audio — up to 20 files.
  2. Choose the format to save as.
  3. Click Convert and download.
Is my video safe?

Yes. Your video is only used to create your result — it’s never shared and never used to train AI.

Why is my recording only in one ear?

The microphone was recorded on one channel only. Mixing to mono plays it equally in both ears.