Are both left and right channels included in the mono file?
Yes. The downmix combines information from both sides instead of keeping only the left or right channel, so content that appears on one side is retained in the mono result.
Combine the left and right sides of a stereo recording into a single mono audio channel.
Drop audio here, or click to select
Audio and video files are processed locally in your browser and are not uploaded.
This flips waveform polarity; it does not play the audio backward. To repair left/right cancellation, invert one channel, not both.
Converting stereo to mono combines information from the left and right channels into one channel. The result plays the same content through both sides of most playback systems and can reduce file size when stereo separation is unnecessary.
Mono is commonly used for voice recordings, interviews, lectures, radio material, accessibility workflows, and devices where a stereo image provides little benefit.
The downmix includes both source channels instead of discarding one side. This matters when instruments, speakers, or effects exist only in the left or right channel.
Choose an output format, create the mono result, and listen to it before downloading. The original stereo file is not modified or uploaded.
Yes. The downmix combines information from both sides instead of keeping only the left or right channel, so content that appears on one side is retained in the mono result.
Opposite-polarity or strongly phase-shifted signals can cancel when the channels are combined. If the mono preview sounds unexpectedly quiet or hollow, check the source polarity before exporting.
It can, because mono stores one channel instead of two, but the final size also depends on the output format and bitrate. Converting to mono does not guarantee a specific reduction.
Related tools: Audio Channel Converter · Mono to Stereo · Extract Left · Extract Right · Swap Channels · Invert Polarity