Convert FLAC to mono

Upload a FLAC file and mix it down to a single mono channel.

Lossless mono

Both channels are blended into one and the result is written as mono FLAC, still lossless. For spoken-word archives this roughly halves storage with no compression compromise, since the audio remains losslessly encoded.

Where mono FLAC makes sense

Oral history and interview archives, sermon and lecture collections, digitized mono sources like old tapes that were stored as fake stereo, and voice material headed for long-term preservation where lossless is policy.

Frequently asked questions

Is mono FLAC still lossless?

Yes. The downmix combines the channels, and the mono result is encoded losslessly as standard FLAC.

Why do digitized tapes benefit from this?

Mono sources captured as stereo store two near-identical channels. Folding them to true mono halves the size and can slightly reduce noise.

Does my archive leave my machine?

No, processing is local to the browser.