File conversion for podcasters
Converters and guides for the file formats podcasters actually deal with — from raw recordings to distribution-ready episodes.
Podcasting touches more file formats than most podcasters realize. You record in WAV (or your DAW's native format), edit in your DAW, master in WAV, and distribute in MP3. Listeners stream the MP3 in apps that may transcode it again. Each step has format choices that affect quality, file size, and whether the listener experience matches what you crafted in the studio.
This page collects the conversions and guides that come up most for podcasters: the right encoder settings for distribution, how to handle Apple's ecosystem, what to do with old episodes recorded in formats you no longer use, and the trade-offs that matter when bandwidth meets audio quality.
Recommended converters for podcasters
The conversions that come up most in podcasters' workflows, with a quick note on when to use each.
WAV → MP3
The standard distribution conversion. Edit in WAV, encode to MP3 once for delivery.
M4A → WAV
Decode AAC recordings (often from iPhone or Mac voice memos) into WAV for editing.
FLAC → MP3
Compress lossless masters into MP3 for distribution without going through a re-encode loop.
MP4 → MP3
Extract audio from video interviews or YouTube guest appearances.
WAV → FLAC
Archive raw recordings and masters in lossless FLAC at half the WAV file size.
MP3 → WAV
Decode an existing MP3 episode into WAV for re-editing or remastering.
Podcasters workflow recommendations
The format and conversion choices that consistently produce the best results for podcasters.
Record in WAV at 48 kHz / 24-bit
Most modern DAWs default to 44.1 kHz which is fine for music, but 48 kHz aligns with video standards if you ever cut a video version of an episode. 24-bit gives extra editing headroom.
Edit and master in lossless
Stay in WAV (or FLAC if storage matters) throughout the editing pipeline. Editing in MP3 compounds compression artifacts at every save.
Encode to MP3 once for distribution
192 kbps stereo MP3 is the podcasting standard. For voice-only content with no music, 96 kbps mono is acceptable and produces files about a third the size.
Archive masters in FLAC
Keep your final WAV master, but compress to FLAC for long-term storage. FLAC files are about half the size with bit-identical quality. Re-encode to MP3 from the FLAC if you ever need to update the distribution version.
Recommended reading
In-depth guides relevant to podcasters' format decisions.
MP3 vs AAC vs FLAC vs WAV: an audio format primer
MP3 is universal but old. AAC is slightly better and Apple-native. FLAC is lossless and small. WAV is uncompressed and big. A practical guide to the four dominant audio formats and when each one is the right choice.
Lossless vs lossy compression: what the words actually mean and why it matters
Lossless compression preserves every bit of the original; lossy compression throws bits away to save space. A foundational guide to the difference, the formats in each camp, and the practical rules of thumb for when to use which.
Seven common file conversion mistakes (and how to avoid each one)
Lossy double-encoding. Ignoring transparency. Forgetting OCR. Trusting auto-detected types. The most common file conversion mistakes and the simple practices that prevent them.
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