MP3 to WAV for Podcasts

It happens on most shows eventually: a guest records their side on a phone or a laptop and sends you an MP3, or a clip you want to use only exists compressed. You would rather have had WAV, but you didn't, and now the episode has to be built around it.

Convert it to WAV before you edit — that is the whole move. If you edit the MP3 directly, your editor decodes it and then re-encodes at export, so the guest's audio ends up carrying its original compression plus a second lossy generation from your episode export. Decode once to WAV and the guest's existing loss is locked in place: your cuts, noise reduction, levelling, and EQ all happen on raw PCM, and only the final episode MP3 adds a lossy step. One generation instead of two, on the track that can least afford it.

Do the same for anything else entering the edit as MP3 — an archival clip, a music bed you only have compressed, a phone-recorded field insert. Bring everything into the timeline as WAV and export a single MP3 at the end.

Be honest with yourself about the ceiling. A guest's 96 kbps MP3 will not become studio audio. Levelling and gentle EQ help it sit next to your clean track; aggressive noise reduction and heavy compression tend to make lossy artifacts more audible, not less. And it is always worth asking guests to send the original WAV — most recording apps keep one, and 'do you still have the uncompressed file?' is the highest-value question in remote podcasting.

The conversion runs entirely in your browser, so a guest's recording is never uploaded to a third-party server — which is increasingly what guests want to hear. Output is standard 16-bit PCM WAV, ready for any editor.