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Stereo to Mono Converter

Mix stereo (or 5.1 surround) down to one channel. Mono is ideal for speech, podcasts, IVR and phone systems, Alexa skills and smaller file sizes.

  • No upload — 100% private
  • Fast, lossless when possible
  • Free & unlimited
  • Works on iPhone & Android

    Quality
    Advanced options

    How to use the Stereo to Mono

    1. 1

      Choose your stereo files.

    2. 2

      Keep the same format or pick a new one (WAV 8 kHz for phone systems).

    3. 3

      Press Convert.

    Mono for phone systems & IVR

    Many phone systems (Asterisk, IVR menus, on-hold music) need mono WAV at 8000 Hz. Choose WAV, then set Sample rate to 8000 Hz in Advanced options.

    Helpful guides

    8 min readAudio Formats Explained: MP3, M4A, AAC, WAV, FLAC, OGG & OPUSPlain-English comparison of every common audio format: quality, file size, device support and the best choice for music, ringtones…

    Frequently asked questions

    Will I lose anything?
    Sounds panned hard left or right are blended into the centre, which is exactly what mono means. For voice recordings there is no audible difference.
    How much smaller is mono?
    Uncompressed formats (WAV) are exactly half the size. For MP3 and M4A, you can use a lower bitrate for the same quality.

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